Arduino Blog
Two NEW Arduino Plug and Make Kit projects recreate iconic vintage games
The Plug and Make Kit is a toolbox you can use for infinite ideas. So what happens if you ask a mix...
3 months ago
The Plug and Make Kit is a toolbox you can use for infinite ideas. So what happens if you ask a mix of Arduino designers, engineers, and managers to sit down and brainstorm new ideas to have fun with it? Well, at least one of them is guaranteed to come up with an adorable,...
Louwrentius
Why filtering DHCP traffic is not always possible with iptables
When configuring my new firewall using iptables, I noticed something very
peculiar. Even if all...
over a year ago
When configuring my new firewall using iptables, I noticed something very
peculiar. Even if all input, forward and output traffic was dropped, DHCP
traffic to and from my DHCP server was not blocked even if there were no
rules permitting this traffic.
I even flushed all rules,...
Jonas Hietala
2016 Read Books
Yeah so I managed to not read a single fiction book this year. To compensate and make myself feel...
over a year ago
Yeah so I managed to not read a single fiction book this year. To compensate and make myself feel better I’ll add in some new mangas I’ve read, but I may may have missed some.
Fiction
Crickets
Non-Fiction
Getting to Yes
Relax into Stretch
Thinking, Fast and Slow
59 seconds
The...
Posts on Made of...
Stripe's monorepo developer environment
I worked at Stripe for about seven years, from 2012 to 2019. Over that time, I used and contributed...
7 months ago
I worked at Stripe for about seven years, from 2012 to 2019. Over that time, I used and contributed to many generations of Stripe’s developer environment – the tools that engineers used daily to write and test code. I think Stripe did a pretty good job designing and building that...
Jonas Hietala
Let's build a VORON: Major failure
The left POM nut got ground down, making the bed fall down.
After 600 hours, the printer met it’s...
9 months ago
The left POM nut got ground down, making the bed fall down.
After 600 hours, the printer met it’s first major failure.
I know I earlier described how the extruder starter skipping in a big way, but that was just some filament getting stuck in the extruder.
This time a part...
Jonas Hietala
Let's build a VORON: Bed & electronics
I’ve made a lot of progress on my VORON.
Electronics and other stuff are installed to the degree...
a year ago
I’ve made a lot of progress on my VORON.
Electronics and other stuff are installed to the degree that I’ve begun wiring, but I’m going to separate the wiring into it’s own post.
This will be a short post about bed preparation and installing electronics components.
Feedback from...
Ken Shirriff's blog
Reverse engineering standard cell logic in the Intel 386 processor
The 386 processor (1985) was Intel's most complex processor at the time, with 285,000...
10 months ago
The 386 processor (1985) was Intel's most complex processor at the time, with 285,000 transistors.
Intel had scheduled 50 person-years to design the processor, but it was falling behind schedule.
The design team decided to automate chunks of the layout, developing "automatic...
Arduino Blog
Arduino’s Alvik Robot shortlisted for the Bett Awards 2025 in the AV, VR/AR, Robotics, and Digital...
We’re thrilled to announce that Arduino Education has been shortlisted for the Bett Awards 2025,...
a month ago
We’re thrilled to announce that Arduino Education has been shortlisted for the Bett Awards 2025, this time in the AV, VR/AR, Robotics, or Digital Device category with our Alvik robot! This recognition highlights our dedication to innovation, inclusivity, and the advancement of...
anderegg.ca
How decentralized is Bluesky really?
Here’s an excellent article from Christine Lemmer-Webber that takes a deeper technical look into...
4 weeks ago
Here’s an excellent article from Christine Lemmer-Webber that takes a deeper technical look into some of the criticisms I had in my previous piece.
The article is long, but very much worth a read. From the conclusion:
Bluesky is built by good people who care, and it is providing...
Vitalik Buterin's...
Travel time ~= 750 * distance ^ 0.6
a year ago
./techtipsy
The optimization treadmill: why I keep changing my computing setup all the time
I have a bad habit of changing my computing setups all the time. I tend to see new gear, then I...
a year ago
I have a bad habit of changing my computing setups all the time. I tend to see new gear, then I get
some new ideas, and then I obsessively think about it for weeks and months until I just buy it.
And then the cycle repeats.
I’ve had time to think about why that keeps happening...
Applied Cartography
11ty
.njk as the default templating language is an odd choice, and I find myself stubbing my toe on it a...
10 months ago
.njk as the default templating language is an odd choice, and I find myself stubbing my toe on it a good amount. Maybe that's a me thing!
It is extremely fast. This site has around 2300 pages; Eleventy is compiling it in around two seconds.
The extensibility ergonomics are...
Willem's Blog
Free from the iCloud: Escaping Apple Photos
Recently I freed myself from Apple Photos, using free software to manage my photo library. Read...
over a year ago
Recently I freed myself from Apple Photos, using free software to manage my photo library. Read along to find out what software I use and how to make it play nice with your devices.
Willem's Blog
No, I Won't Build That!
Discover how saying 'no' can lead to more innovative and meaningful work in this blog post: "No, I...
9 months ago
Discover how saying 'no' can lead to more innovative and meaningful work in this blog post: "No, I Won't Build That!"
Notes on software...
Confusion is a muse
Some of the most interesting technical blog posts I read come from,
and a common reason for posts I...
6 months ago
Some of the most interesting technical blog posts I read come from,
and a common reason for posts I write is, confusion. You're at work
and you start asking questions that are difficult to answer. You spend
a few hours or a day trying to get to the bottom of things.
If you ask a...
Home on Erik...
The relationship between commit size and commit message size
Wow I guess it was more than a year ago that I tweeted this. Crazy how time flies by. Anyway, here's...
over a year ago
Wow I guess it was more than a year ago that I tweeted this. Crazy how time flies by. Anyway, here's my rationale:
When I update one line of code I feel like I have to put in a long explanation about its side effects, why it's fully backwards compatible, and why it fixes some...
Matt Blewitt
Building a PostgreSQL Extension, Line by Line
I’ve been working on a particular problem - how to offer logical replication for a very large number...
6 months ago
I’ve been working on a particular problem - how to offer logical replication for a very large number of Postgres databases, where I don’t have the ability (or capacity) to liaise with the users of the databases one-to-one. In order to mitigate some of the limitations, I wanted to...
Arduino Blog
A pair of Arduino UNO R4 boards power this Tron-inspired, decked-out shop room
Bob Clagett of the “I Like to Make Stuff” YouTube channel has recently undertaken an extensive shop...
6 months ago
Bob Clagett of the “I Like to Make Stuff” YouTube channel has recently undertaken an extensive shop renovation project where he is rearranging tools, tidying up various spaces, and even creating a dedicated “clean” room for his collection of 3D printers/electronics work. With its...
Lighthouse Blog
Updates September 16: Explore all available articles of a feed
3 months ago
Louwrentius
I switched my blog from Blogofile to Pelican
This blog is a static website, which makes it fast, simple and secure. It was generated by Blogofile...
over a year ago
This blog is a static website, which makes it fast, simple and secure. It was generated by Blogofile but I switched to Pelican.
Blogofile has seen almost no updates over the years and I consider the project dead. Realising that blogofile is dead, I decided to look around for...
Computer Ads from...
Plus Post: Lobo MAX-80
The Computer Tandy Should Have Built (at least according to the ad).
9 months ago
The Computer Tandy Should Have Built (at least according to the ad).
Buck on Software
Don't be foie gras
If 2016-2020 was the golden unicorn age of SaaS, 2021 nearly hurtled us into the foie gras* era.
over a year ago
If 2016-2020 was the golden unicorn age of SaaS, 2021 nearly hurtled us into the foie gras* era.
Jonas Hietala
The 4-Hour Chef: Scrambled Eggs
I’ve been listening to The Tim Ferriss Show a while now and he and his guests often inspire me to...
over a year ago
I’ve been listening to The Tim Ferriss Show a while now and he and his guests often inspire me to make changes and start doing new things. I got introduced to Josh Waitzkin’s excellent The Art of Learning and the meta skill of learning has since then fascinated me. So when I got...
Jonas Hietala
Doing Stuff
The school and my life is trotting along. I’m handling the extra course fine, but instead I’ve left...
over a year ago
The school and my life is trotting along. I’m handling the extra course fine, but instead I’ve left the standard math course behind a bit. Actually more than a bit but hopefully I’ll correct things later.
No my life is going along just fine, it almost feels like my life is runing...
Arduino Blog
Giving a teenage pet turtle a synthetic pizza-ordering voice
If B. F. Skinner’s famous research proved anything, it is that virtually all animals are capable of...
3 months ago
If B. F. Skinner’s famous research proved anything, it is that virtually all animals are capable of some degree of training. Training is really just taking advantage of an animal’s natural inclination to adapt for survival, which is something all living organisms do. With that in...
Notes on software...
Interpreting Go
After spending some time at work on tooling for keeping documentation
in sync with Go struct...
over a year ago
After spending some time at work on tooling for keeping documentation
in sync with Go struct definitions I had enough exposure to Go's
built-in parsing package that next steps were clear: write an
interpreter. It's a great way to get more comfortable with a
language's
AST.
In...
Computer Ads from...
Apple IIe and IIc Design Manager Peter Quinn Interviewed by BYTE's Gregg Williams
A behind-the-scenes look at the development of the Apple IIe and IIc.
9 months ago
A behind-the-scenes look at the development of the Apple IIe and IIc.
Posts on Made of...
Reader/reader blocking in reader/writer locks
Abstract In writer-priority reader/writer locks, as soon as a single writer enters the acquisition...
over a year ago
Abstract In writer-priority reader/writer locks, as soon as a single writer enters the acquisition queue, all future accesses block behind any in-flight reads. Thus, if any readers hold the lock for extended periods of time, this can lead to extreme pauses and loss of throughput...
Home on Erik...
Miscellaneous unsolicited (and possibly biased) career advice
No one asked for this, but I'm something like ~12 years into my career and have had my fair share of...
over a year ago
No one asked for this, but I'm something like ~12 years into my career and have had my fair share of mistakes and luck so I thought I'd share some.
Honestly, I feel like I've mostly benefitted from luck.
Jonas Hietala
My first theme: Addictive Gaming
In true experimental spirit I’ll now announce the theme for my first game: Addictive Gaming. I won’t...
over a year ago
In true experimental spirit I’ll now announce the theme for my first game: Addictive Gaming. I won’t be following the lead from the Experimental Gameplay Project’s site but I will follow their three laws (7 days, alone, themes).
Puh… my first game! Wish me luck =)
Arduino Blog
GLEWBOT scales buildings like a gecko to inspect wall tiles
A great deal of building maintenance expenses are the result of simple inaccessibility. Cleaning the...
7 months ago
A great deal of building maintenance expenses are the result of simple inaccessibility. Cleaning the windows are your house is a trivial chore, but cleaning the windows on a skyscraper is serious undertaking that needs specialized equipment and training. To make exterior wall...
Louwrentius
Script that shows smart values of all disks'
Please use this tool on github instead of this ancient script.
So you have a Linux system with a lot...
over a year ago
Please use this tool on github instead of this ancient script.
So you have a Linux system with a lot of hard drives. If you want to quickly check on some key SMART values to determine the health of individual disks, you might be interested in this script.
I wrote a small Python...
Arduino Blog
Turning a desk mat into a MIDI drum kit
Playing drums is a lot of fun, but drum sets are very big and very loud. They also aren’t cheap....
a month ago
Playing drums is a lot of fun, but drum sets are very big and very loud. They also aren’t cheap. Those factors keep them from being an option for many people who would otherwise be interested. Conventional electronic drum sets are much quieter and a bit more compact, but they...
Matt Blewitt
Unreasonably Effective Patterns
Much of my current job is maintaining and enhancing control planes for Heroku’s managed data...
over a year ago
Much of my current job is maintaining and enhancing control planes for Heroku’s managed data services. This post explores three patterns used to reduce operational burden and increase system safety and resiliency: state machines (and associated state-transition tables),...
Jonas Hietala
A small LED Cube
As a follow up of my hobby project goals this autumn I have now completed the smallest goal there. I...
over a year ago
As a follow up of my hobby project goals this autumn I have now completed the smallest goal there. I got started a little with soldering by constructing a small 3x3x3 LED cube.
Although extremely hard to see in this picture it actually worked without a hitch! It’s not the...
./techtipsy
How to make digital copies of your old video tapes
Introduction
This is a short overview of one way to take your old video tapes and make digital...
over a year ago
Introduction
This is a short overview of one way to take your old video tapes and make digital copies of their contents.
To get started, you will need the following:
old video tapes that you want to make copies of (VHS and its variants)
a device that can read analog AV signals...
Computer Ads from...
Plus Post: Objects, Inc's Layout
Build Programs Without Programming
10 months ago
Build Programs Without Programming
Electronics etc…
$17 GM1312 Thermometer Review, Test, and Teardown
Introduction
What is a thermocouple
The GM1213 Thermometer
A few...
a year ago
Introduction
What is a thermocouple
The GM1213 Thermometer
A few tests
Internals
Conclusion
References
Introduction
I’ve been doing a bunch of measurements on oven-controlled oscillators lately,
including their temperature. There are multiple ways to measure...
Louwrentius
Why VMware vSphere replication is changing the game
If you are running a serious VMware environment, chances are you do have a SAN. Often with smaller...
over a year ago
If you are running a serious VMware environment, chances are you do have a SAN. Often with smaller setups, many people do employ multiple VMware hosts, but the SAN is a single point of failure.
SANs are often fully redundant devices, with redundant PSUs, storage controllers,...
Notes on software...
Analyzing large JSON files via partial JSON parsing
This is an external post of mine. Click
here
if you are not redirected.
over a year ago
This is an external post of mine. Click
here
if you are not redirected.
Jonas Hietala
MenuCity: Level 0 Walkthrough
It hasn’t even been a week since I released my latest game MenyCity and already so much positive...
over a year ago
It hasn’t even been a week since I released my latest game MenyCity and already so much positive feedback! I’m so thrilled :) However, all isn’t blue skies and nice sunshine. A lot of times the first question is: How do you play it? or How do you get past the first level? I admit...
Good Enough
Grassroots
TLDNR: If you have an interest in Good Enough succeeding, we need your help! Telling friends,...
8 months ago
TLDNR: If you have an interest in Good Enough succeeding, we need your help! Telling friends, shouting on socials, and sharing links to our stuff with your favorite influencers–all of these things will help Good Enough succeed and continue making amazing stuff!
As we’ve been...
Lighthouse Blog
Deep dive into finding RSS feeds
2 weeks ago
Posts on Made of...
reptyr: Changing a process's controlling terminal
reptyr (announced recently on this blog) takes a process that is currently running in one terminal,...
over a year ago
reptyr (announced recently on this blog) takes a process that is currently running in one terminal, and transplants it to a new terminal. reptyr comes from a proud family of similar hacks, and works in the same basic way: We use ptrace(2) to attach to a target process and force...
Louwrentius
20 disk 18 TB RAID 6 storage based on Debian Linux
This system is no longer operational and has been decomissioned (2017)
This is my NAS storage server...
over a year ago
This system is no longer operational and has been decomissioned (2017)
This is my NAS storage server based on Debian Linux. It uses software RAID and 20 one
terrabyte hard drives. It provides a total usable storage capacity of 18 terrabytes in a single RAID 6 array.
One of the...
Posts on Made of...
Write testable code by writing generic code
Alex Gaynor recently asked this question in an IRC channel I hang out in (a channel which contains...
over a year ago
Alex Gaynor recently asked this question in an IRC channel I hang out in (a channel which contains several software engineers nearly as obsessed with software testing as I am):
uhh, so I’m writing some code to handle an econnreset… how do I test this?
This is a good question!...
Jonas Hietala
Printing Hextraction for my kids
A session of Hextraction, a 3D printed board game.
I did it.
I made something actually useful with...
10 months ago
A session of Hextraction, a 3D printed board game.
I did it.
I made something actually useful with my 3D printer instead of just tinkering with it.
I printed Hextraction, a very cool 3D printed board game for my kids—and they love it.
Hextraction is a gamified marble run, where...
Good Enough
TIL: Use touch-action: manipulation; to avoid double-tap-to-zoom
Recently we built and launched A Good Enough Guestbook, a place where you can send us doodles and...
a year ago
Recently we built and launched A Good Enough Guestbook, a place where you can send us doodles and they’ll print out on our little printer. It’s quite lovely and fun, and you should send us a doodle. We might also have more in store for these printers in the future.
In the...
Arduino Blog
Axiom is Arduino’s newest Gold Integration Partner!
Digital manufacturing consultancy and solutions provider, Axiom Manufacturing Systems, based in the...
6 months ago
Digital manufacturing consultancy and solutions provider, Axiom Manufacturing Systems, based in the United States, has recently joined our System Integrators Partnership Program. As Gold-level partners, Axiom will supercharge their mission – to empower manufacturers to rapidly...
./techtipsy
Running on fumes
After a run-of-the-mill Windows BSOD, I was redirected to the UEFI
settings and was presented with...
over a year ago
After a run-of-the-mill Windows BSOD, I was redirected to the UEFI
settings and was presented with this fun little bug:
0GB ought to be enough for anybody.
Jonas Hietala
2018 in review
A new year and a lingering feeling of not having done enough during the year. A fast review of the...
over a year ago
A new year and a lingering feeling of not having done enough during the year. A fast review of the year usually makes me feel better.
2018 non-geek achievements
Was on parental leave for about 7 months.
It was great although I’ve been crawling up the walls a little the last...
Jonas Hietala
Food vacation in Japan
Me and my friend spent 2 weeks in Japan and had a great time. I wasn’t planning on taking a lot of...
over a year ago
Me and my friend spent 2 weeks in Japan and had a great time. I wasn’t planning on taking a lot of pictures, but I ended up sending a bunch back home as a ways of keeping my family up to date. When I look back most of them are about food… So I’ll turn this into a post about the...
computers are bad
2024-01-21 multi-channel audio part 1
Stereophonic or two-channel audio is so ubiquitous today that we tend to refer
to all kinds of...
11 months ago
Stereophonic or two-channel audio is so ubiquitous today that we tend to refer
to all kinds of pieces of consumer audio reproduction equipment as "a stereo."
As you might imagine, this is a relatively modern phenomenon. While stereo
audio in concept dates to the late 19th...
./techtipsy
The simplicity of the modulo operator: how I scaled an inefficient solution on a legacy system
Your service cannot process events fast enough during peak hours.
There is no obvious quick and...
a year ago
Your service cannot process events fast enough during peak hours.
There is no obvious quick and dirty fix.
Refactoring would take ages.
People have been unhappy for a while now.
What the hell do you do?
Background
I had the pleasure of working with a legacy backend system...
Arduino Blog
This fake CRT TV works using lasers and UV magic
Until the 21st century, cathode-ray tube (CRT) TVs were pretty much the only option. As such, media...
3 weeks ago
Until the 21st century, cathode-ray tube (CRT) TVs were pretty much the only option. As such, media was made to suit them. Retro video game consoles in particular look best on CRT TVs. But those old TVs are getting hard to find and desirable models are now quite expensive. So,...
Louwrentius
IKEA $50 VINDSTYRKA vs. $290 Dylos air quality monitor
This is a brief article in which I compare the IKEA VINDSTYRKA $50 air quality monitor (PM2.5) with...
a year ago
This is a brief article in which I compare the IKEA VINDSTYRKA $50 air quality monitor (PM2.5) with a $290 air quality monitor made by Dylos to see if it's any good.
Context
If you care about indoor air quality, you may already own a CO2 to determine if it's time to ventilate...
Arduino Blog
Technology meets creativity in two interactive art student projects
Art and engineering are not separate concepts. There is a great deal of overlap between the two and...
2 months ago
Art and engineering are not separate concepts. There is a great deal of overlap between the two and many modern disciplines increasingly blur those lines. Mónica Riki is an “electronic artist and creative coder” who embodies that idea: you might remember her and her incredible...
Jonas Hietala
2017 in Review
In contrast to previous years I haven’t kept up with the blog. For good reason I’d say since we got...
over a year ago
In contrast to previous years I haven’t kept up with the blog. For good reason I’d say since we got a child in October! It really alters your perspectives and other things suddenly feel a little less important and of course there’s less time to do other stuff.
A little late and...
Vitalik Buterin's...
DAOs are not corporations: where decentralization in autonomous organizations matters
over a year ago
Louwrentius
Automated install of Debian Linux based on PXE net booting
Every honest and good system administrator is continue bussy with automating
his work. For two...
over a year ago
Every honest and good system administrator is continue bussy with automating
his work. For two reasons:
Repeating the same task over and over again is friggin boring. A system
administrator has better things to do, such as drinking coffee.
Humans make mistakes, especially if...
Jonas Hietala
Establishing Habits with Habitica
I have used Habitica the last 18 months to organize my habits and things I want to get done. I...
over a year ago
I have used Habitica the last 18 months to organize my habits and things I want to get done. I believe it all started with an amazing book called The Power of Habit which describes the amazing benefits habits can give, both in the context of your own life but also in business....
Louwrentius
Belkin Gigabit USB 2.0 adapter works perfectly with Linux
My ISP upgraded my internet connection speed to a whopping 120 Mbit. I am
using a mac mini as my...
over a year ago
My ISP upgraded my internet connection speed to a whopping 120 Mbit. I am
using a mac mini as my internet router. As you may be aware, the mini has
only one network interface, so I added a second interface using a USB to
ethernet adapter. This adapter was limited to 100 Mbit, so...
Arduino Blog
Team Ikaro scores success with the Arduino Nano RP2040 Connect!
Team Ikaro is a vibrant group of high school students from the Pacinotti Archimede Institute in...
3 months ago
Team Ikaro is a vibrant group of high school students from the Pacinotti Archimede Institute in Rome, sharing a strong passion for electronics and turning heads in the world of robotics! Specializing in Soccer Lightweight games (where robot-soccer players compete to score goals...
Vitalik Buterin's...
What else could memecoins be?
8 months ago
Notes on software...
How do databases execute expressions?
Databases are fun. They sit at the confluence of Computer
Science topics that might otherwise not...
a year ago
Databases are fun. They sit at the confluence of Computer
Science topics that might otherwise not seem practical in life as a
developer. For example, every database with a query language is also a
programming language implementation of some caliber. That doesn't
include all...
Louwrentius
HighPoint RocketRAID and staggered spinup with Samsung F1
I have experienced problems using a HighPoint RocketRaid 2320 and 2340 when
they are using...
over a year ago
I have experienced problems using a HighPoint RocketRaid 2320 and 2340 when
they are using 'staggered spinup' in combination with Samsung Spinpoint F1, 1
(one) terrabyte disks.
The problem is that the F1 disks spinup very slowly and often seem to 'hang'
while making ticking...
Home on Erik...
My favorite management failures
For most people straight out of school, work life is a bit of a culture shock. For me it was an...
over a year ago
For most people straight out of school, work life is a bit of a culture shock. For me it was an awesome experience, but a lot of the constraints were different and I had to learn to optimize for different things.
Louwrentius
Tunneling Elixir cluster network traffic over Wireguard
Introduction
The other day I was supporting a customer with an Elixir-based platform that would make...
a year ago
Introduction
The other day I was supporting a customer with an Elixir-based platform that would make use of Elixir libcluster, so messages on one host can be passed to other hosts. This can - for example - enable live updates for all users, even if they are not communicating with...
Abort Retry Fail
The History of Slackware
The Oldest Surviving Linux Distribution
a year ago
The Oldest Surviving Linux Distribution
Louwrentius
RAID 5 vs. RAID 6 or do you care about your data?
Storage is cheap. Lots of storage with 10+ hard drives is still cheap. Running
10 drives increases...
over a year ago
Storage is cheap. Lots of storage with 10+ hard drives is still cheap. Running
10 drives increases the risk of a drive failure tenfold. So often RAID 5 is
used to keep your data up and running if one single disks fails.
But disks are so cheap and storage arrays are getting so...
Applied Cartography
Using Cursor to port Django tests to pytest
When it comes to AI tooling, I am equal parts optimist and cynic. I have no moral qualm with using...
3 months ago
When it comes to AI tooling, I am equal parts optimist and cynic. I have no moral qualm with using these tools (Supermaven is a pretty heavy part of my day-to-day work), but have found most tools quite bad by the metric of "do they make me more productive on Buttondown's code...
Computer Ads from...
Small Systems Engineering's PETSPEED
Fast Enough for the Human Race
5 months ago
Fast Enough for the Human Race
seangoedecke.com RSS...
Blockchain explained simply
A blockchain is a distributed database. Bitcoin, Ethereum and Dogecoin are all different databases....
over a year ago
A blockchain is a distributed database. Bitcoin, Ethereum and Dogecoin are all different databases. A blockchain node is a computer with an…
GitButler
GitButler 0.13 - "Lucky Baseball"
It has been 4 months since our last minor release. In that time, we have done 27 patch releases,...
2 months ago
It has been 4 months since our last minor release. In that time, we have done 27 patch releases, adding lots of small features, bug fixes, performance improvements and experiments.
Last week we released GitButler 0.13, which is our first release with our new Fearless Rebasing...
./techtipsy
How I fixed one hardware issue with another one
I happen to run on an ASRock Fatal1ty B450 Gaming-ITX/ac
motherboard that used to run fine, but ever...
over a year ago
I happen to run on an ASRock Fatal1ty B450 Gaming-ITX/ac
motherboard that used to run fine, but ever since I installed one UEFI update, it has had this one annoying issue:
whenever you reboot, it gets stuck at POST. Cold boots work fine and the shutdown-and-push-the-power-button...
Arduino Blog
Check out these Arduino-powered research projects from CHI 2024
Held in Hawaii this year, the Association of Computing Machinery (ACM) hosted its annual conference...
6 months ago
Held in Hawaii this year, the Association of Computing Machinery (ACM) hosted its annual conference on Human Factors in Computing Systems (CHI) that focuses on the latest developments in human-computer interaction. Students from universities all across the world attended the...
Vitalik Buterin's...
Coordination, Good and Bad
over a year ago
Willem's Blog
Tablet as Tool
Discover the hidden advantages of the iPad Pro in this insightful blog post, offering tips and...
a year ago
Discover the hidden advantages of the iPad Pro in this insightful blog post, offering tips and personal experiences to help you maximise the tablet's potential and redefine your workflow.
Abort Retry Fail
The History of Red Hat
The Billion Dollar Open Source Company
a year ago
The Billion Dollar Open Source Company
Willem's Blog
Fighting backscatter spam at server level
Deal with backscatter spam by implementing a stringent SMTP delivery policy at MTA level.
over a year ago
Deal with backscatter spam by implementing a stringent SMTP delivery policy at MTA level.
Louwrentius
Smoking coolermaster Silent Pro M 600W TN6M50
So I was just messing around on my work station, when suddenly I smelled the
smell any person...
over a year ago
So I was just messing around on my work station, when suddenly I smelled the
smell any person familiar with electronics fears. The smell of some electrical
component burning.
The whole upper floor smelled like something was smoldering. So I shut down
both my storage servers....
Jonas Hietala
2015 Read Books
I didn’t read a lot of books in 2015, but the books I did read were pretty damn good.
Fiction
A Song...
over a year ago
I didn’t read a lot of books in 2015, but the books I did read were pretty damn good.
Fiction
A Song of Ice and Fire: A Dance with Dragons - George R.R. Martin
Reread.
A Knight of the Seven Kingdoms - Gearge R.R. Martin
The Skin Collector - Jeffery Deaver
Best Served Cold - Joe...
Arduino Blog
KiPneu makes soft robotic biomimetics accessible to STEAM students
Biomimicry, which is a method for developing new technology inspired by nature, has been one of...
5 months ago
Biomimicry, which is a method for developing new technology inspired by nature, has been one of humanity’s greatest assets. But systems reliant on soft tissue, such as an octopus’s tentacles, have been notoriously difficult to reproduce in the robotics world. To give STEAM...
Jonas Hietala
Favourite Programming Language
All the programmers love to promote their favourite language, or to hate on others. Now I read a...
over a year ago
All the programmers love to promote their favourite language, or to hate on others. Now I read a post which claimes my favourite language is not good enough! But he’s correct of course, there is no one language to rule them all. You should always choose the mest language for the...
Posts on Made of...
Navigating the Linux Kernel
In response to my query last time, ezyang asked for any tips or tricks I have for finding my way...
over a year ago
In response to my query last time, ezyang asked for any tips or tricks I have for finding my way around the Linux kernel. I’m not sure I have much in the way of systematic advice for tracking down the answers to questions about the Linux kernel, but thinking about what I do when...
Lighthouse Blog
Introducing Lighthouse - The RSS reader, newsletter reader, and read-it-later app to fight content...
8 months ago
./techtipsy
No HDMI port on the ThinkPad T430? No problem!
The ThinkPad T430 has a few options for running it with an external display:
VGA port, which is...
5 months ago
The ThinkPad T430 has a few options for running it with an external display:
VGA port, which is pretty much obsolete at this point
mini DisplayPort connector on the laptop itself
DVI or DisplayPort on a dock
The mini DisplayPort port has annoyed me for as long as I’ve had this...
Computer Ads from...
Vote for the Topic of the February 2024 Plus Post
If you are a paid subscriber, voting is open for one week
10 months ago
If you are a paid subscriber, voting is open for one week
Applied Cartography
Keeping a technical edge
Someone emailed me in response to Two years as an independent technologist, in which I wrote:
I miss...
3 months ago
Someone emailed me in response to Two years as an independent technologist, in which I wrote:
I miss of being at a large company, which is dealing with deeply cutting-edge technical problems, but my ability to analyze information, make decisions, and perform at a high-level has...
Willem's Blog
Hospitalised with MCADD
This week our son was hospitalised because a regular illness caused him to keep vomiting, a...
over a year ago
This week our son was hospitalised because a regular illness caused him to keep vomiting, a dangerous situation if you're diagnosed with MCADD.
Home on Erik...
Luigi Presentation @ NYC Data Science, Dec 16, 2014
More Luigi presentations!
over a year ago
More Luigi presentations!
Avestura's Blog
How optimistic or pessimistic are the Kurzgesagt videos?
A sentiment analysis on the last 20 videos of Kurzgesagt.
a year ago
A sentiment analysis on the last 20 videos of Kurzgesagt.
Jonas Hietala
Moving to FastMail
About two years ago after Lavabit’s shutdown I searched for a replacement email provider. For some...
over a year ago
About two years ago after Lavabit’s shutdown I searched for a replacement email provider. For some reason I settled on eumx which I used since then. Yesterday I got an email saying the recurring billing could not be renewed as I had my old credit card registered and it got me...
Jonas Hietala
HandCash handles require trust and are insecure
The HandCash wallet has recently become a popular Bitcoin Cash wallet in large part thanks to their...
over a year ago
The HandCash wallet has recently become a popular Bitcoin Cash wallet in large part thanks to their $handle concept. It’s basically a username you use instead of the normal Bitcoin Cash address, similar to how domain names abstract away IP addresses. For example instead of...
Computer Ads from...
EPYX's Pitstop
Where Winning is the Pits.
6 months ago
Where Winning is the Pits.
Home on Erik...
The hacker's guide to uncertainty estimates
It started with a tweet:
New years resolution: every plot I make during 2018 will contain...
over a year ago
It started with a tweet:
New years resolution: every plot I make during 2018 will contain uncertainty estimates
— Erik Bernhardsson (@bernhardsson) January 7, 2018 Why? Because I've been sitting in 100,000,000 meetings where people endlessly debate whether the monthly number of...
Ian's Blog
Pragmatically Generating a Self-Signed Certificate and Private Key using OpenSSL
Recently I found myself needing to generate a HTTPS Server Certificate and Private Key for an iOS...
over a year ago
Recently I found myself needing to generate a HTTPS Server Certificate and Private Key for an iOS app using OpenSSL, what surprised me was the total lack of documentation for OpenSSL.
While there is plenty of function documentation, what OpenSSL really lacks is examples of how it...
Vitalik Buterin's...
A Guide to 99% Fault Tolerant Consensus
over a year ago
Neil Madden
Hybrid encryption and the KEM/DEM paradigm
If you know a bit about public key cryptography, you probably know that you don’t directly encrypt a...
over a year ago
If you know a bit about public key cryptography, you probably know that you don’t directly encrypt a message with a public key encryption algorithm like RSA. This is for many reasons, one of which being that it is incredibly slow. Instead you do what’s called hybrid encryption:...
Louwrentius
The security risk of vendor-supplied default SSL certificates
Often, software comes supplied with some default SSL certificate, for testing
purposes, such as...
over a year ago
Often, software comes supplied with some default SSL certificate, for testing
purposes, such as those 'snake oil' certificates (they are called snake oil
certificates for a reason). In practice, I often encounter usage of such
certificates. People may seem to think that as long...
seangoedecke.com RSS...
Keep incidents boring
The internet is full of exciting incident war stories. Tough engineering problems, solved under...
over a year ago
The internet is full of exciting incident war stories. Tough engineering problems, solved under pressure by sleep-deprived developers. In an…
Style over Substance
Our favorite places to eat and drinks during our Portugal vacation
In the summer of 2023, we went on an amazing trip through Portugal. We’d already visited Lisbon on a...
7 months ago
In the summer of 2023, we went on an amazing trip through Portugal. We’d already visited Lisbon on a short city trip a few years earlier, and that experience was so good we knew we had to return. This time, we decided to take a full three weeks and see the sights. We were...
Old Vintage...
The Living Computers Museum finally isn't
First off, apologies for a quiet month as I've been dealing with family matters which hopefully are...
5 months ago
First off, apologies for a quiet month as I've been dealing with family matters which hopefully are now on a better footing (more articles are in the hopper). Unfortunately, the same apparently can't be said for the once-great Living Computers Museum + Labs in Seattle,...
Ken Shirriff's blog
Inside a vintage aerospace navigation computer of uncertain purpose
I recently obtained an aerospace computer from the early 1970s, apparently part of a navigation...
6 months ago
I recently obtained an aerospace computer from the early 1970s, apparently part of a navigation system.
Aerospace computers are an interesting but mostly neglected area of computer hardware, so I'm always delighted to
examine one up close.
In an era when most computers were large...
Posts on Made of...
My Apollo Bibliography
Over the last few years — perhaps not that unusually among the nerds I know — I’ve become...
over a year ago
Over the last few years — perhaps not that unusually among the nerds I know — I’ve become increasingly fascinated by the Apollo program (and early space program more generally), and been reading my way through a growing number of books and documentaries written about it. At a...
Computer Ads from...
Vote for the April 2004 Plus Post Topic
If you are a paid subscriber, voting is open for one week
8 months ago
If you are a paid subscriber, voting is open for one week
Willem's Blog
Helping people with free software
This week I helped a man with repairing and reinstalling his computer with Debian GNU/Linux.
over a year ago
This week I helped a man with repairing and reinstalling his computer with Debian GNU/Linux.
Louwrentius
Lustre and the risk of Serious Data Loss
Personally I have a weakness for big-ass storage. Say 'petabyte' and I'm
interested. So I was...
over a year ago
Personally I have a weakness for big-ass storage. Say 'petabyte' and I'm
interested. So I was thinking about how you would setup a large, scalable
storage infrastructure. How should such a thing work?
Very simple: you should be able just to add hosts with some bad-ass huge...
Notes on software...
Intercepting and modifying Linux system calls with ptrace
How software fails is interesting. But real-world errors can be
infrequent to manifest....
a year ago
How software fails is interesting. But real-world errors can be
infrequent to manifest. Fault
injection
is a formal-sounding term that just means: trying to explicitly
trigger errors in the hopes of discovering bad logic, typically
during automated tests.
Jepsen
and ChaosMonkey...
Jonas Hietala
Robot Project Start
So it has begun, the long road until christmas when we’re supposed to have a working warrior robot....
over a year ago
So it has begun, the long road until christmas when we’re supposed to have a working warrior robot. We’re gonna do battle with infrared lasers instead of axes but it might be fun anyway. Luckily for me I’m responsible for software and nothing harder than that! w00p!
We could...
computers are bad
2024-02-11 the top of the DNS hierarchy
In the past (in fact two years ago, proof I have been doing this for a while
now!) I wrote
about
the...
10 months ago
In the past (in fact two years ago, proof I have been doing this for a while
now!) I wrote
about
the "inconvenient truth" that structural aspects of the Internet make truly
decentralized systems infeasible, due to the lack of a means to perform
broadcast discovery. As a result,...
Vitalik Buterin's...
The Dawn of Hybrid Layer 2 Protocols
over a year ago
Notes on software...
A reawakening of systems programming meetups
This year has seen a resurgence in really high quality systems
programming meetups. Munich...
5 months ago
This year has seen a resurgence in really high quality systems
programming meetups. Munich Database
Meetup, Berlin
Systems Group, SF Distributed
Systems Meetup, NYC
Systems, Bengaluru
Systems, to name a few.
This post summarizes a bit of disappointing recent tech meetup
history,...
Abort Retry Fail
Housekeeping for 20240701
Another correction
5 months ago
Old Vintage...
So thieves broke into your storage unit - again
If you've been wondering why entries have been a little slow lately, let me tell you a story.
All...
2 months ago
If you've been wondering why entries have been a little slow lately, let me tell you a story.
All collectors tend to be a bit obsessive by nature, and us classic computer nerds probably pick up more hardware than we can (or should) store in our residence — especially if the...
Jonas Hietala
The current T-34 keyboard layout
I’ve been documenting my own keyboard layout in a series for a while now. But as the layout is...
over a year ago
I’ve been documenting my own keyboard layout in a series for a while now. But as the layout is constantly changing it’s been difficult to piece together how the layout currently looks like, so this post tries to show how the layout looks right now in it’s entirety.
If you want to...
Willem's Blog
Collecting health data with Biostrap
Wearing a clinical-grade PPG sensor for a month to collect advanced biometrics from my wrist.
over a year ago
Wearing a clinical-grade PPG sensor for a month to collect advanced biometrics from my wrist.
Jonas Hietala
How I made a kick-ass cover for my self-published book
If you want to publish a book, one of the most important things to consider is the cover—after all,...
over a year ago
If you want to publish a book, one of the most important things to consider is the cover—after all, we judge the book by the cover.
And I did it the universally recommended way:
I hired a designer.
Simple, right?
But real talk; it’s not exactly that simple and I did a bunch of...
Odds and Ends of...
Odds and Ends #43: An awesome drone trial in central London, legalised e-scooters at last, and...
And yes, I am on Bluesky.
a month ago
And yes, I am on Bluesky.
Willem's Blog
Solo around the Markermeer (211KM)
This week I took my bike for a long distance (211)KM ride around the Dutch Markermeer, solo! Read...
over a year ago
This week I took my bike for a long distance (211)KM ride around the Dutch Markermeer, solo! Read along for practical tips for long distance cycling.
On Life and Lisp
OpenGL 3.1 on Asahi Linux
Upgrade your Asahi Linux systems, because your graphics drivers are getting a big boost:...
a year ago
Upgrade your Asahi Linux systems, because your graphics drivers are getting a big boost: leapfrogging from OpenGL 2.1 over OpenGL 3.0 up to OpenGL 3.1! Similarly, the OpenGL ES 2.0 support is bumping up to OpenGL ES 3.0. That means more playable games and more functioning...
Odds and Ends of...
Book now! Where we're going, we need roads (and trains)
My next in-person event/meet-up, with transport policy expert Michael Dnes!
3 weeks ago
My next in-person event/meet-up, with transport policy expert Michael Dnes!
Jonas Hietala
What's up
It’s been a while again since the last time we met mr. Blog. I’ve been busy with school and other...
over a year ago
It’s been a while again since the last time we met mr. Blog. I’ve been busy with school and other stuff. I’ve thought about you but I just never really picked up emacs to write to you. I know it’s my fault but I beg of your mercy mr. Blog. You know that I had laid off school for...
Lighthouse Blog
What I want to achieve with Lighthouse
10 months ago
OH8HUB’s Substack
Spring day ham radio activation in Hiastinlahti, Finland
Hiastinlahti is a bay where river Iijoki flows into Bothnian Bay, the northernmost part of Gulf of...
a year ago
Hiastinlahti is a bay where river Iijoki flows into Bothnian Bay, the northernmost part of Gulf of Bothnia. This area is a Nature 2000 nature reserve area and good spot for bird watching. The area has a two kilometer long nature trail with fireplace, lean-to and toilet. From the...
Willem's Blog
Cutting Cloud Costs
Facing sky-high cloud costs, I found software optimisation vital. Discover how I saved 90% on cloud...
a year ago
Facing sky-high cloud costs, I found software optimisation vital. Discover how I saved 90% on cloud expenses!
Jonas Hietala
An intriguing new puzzle
Here’s another game made for the experimental gameplay project:
Slidoku which is a sort of mix...
over a year ago
Here’s another game made for the experimental gameplay project:
Slidoku which is a sort of mix between Rubik’s cube and sudoku. I enjoy puzzles like those and I really enjoyed this one too - it took me a while to beat it but I just love the feeling when you do. If you like...
Notes on software...
Book Review: ANSI Common Lisp
Score: 4.5 / 5
Paul Graham and his editor(s) are excellent. His prose is light and
easy to follow....
over a year ago
Score: 4.5 / 5
Paul Graham and his editor(s) are excellent. His prose is light and
easy to follow. The only awkward component of the book's organization
is that he tends to use a concept one section before explicitly
introducing and defining that concept. I'm not sure yet if this...
Willem's Blog
Computer says no
The weather app indicating rain caused an empty bike lane this morning, making me wonder about the...
over a year ago
The weather app indicating rain caused an empty bike lane this morning, making me wonder about the power we put into these things.
Willem's Blog
Refining my tablet OS experience
Installing Debian GNU/Linux on a Surface Go 2 with LTE/4G to replace my iPad Pro as daily driver.
over a year ago
Installing Debian GNU/Linux on a Surface Go 2 with LTE/4G to replace my iPad Pro as daily driver.
Arduino Blog
Arduino Education at Bett 2025: Shaping the future of K-12 and HE
Mark your calendars… Arduino Education is coming to Bett UK 2025! Taking place for three days from...
5 days ago
Mark your calendars… Arduino Education is coming to Bett UK 2025! Taking place for three days from January 22nd-24th at the ExCeL exhibition center in London, Bett is the ultimate global event for educational innovation. We are attending the stand with our partner CreativeHut...
Lighthouse Blog
How to manually add content to read it later
6 months ago
Jonas Hietala
IDA Summer of Code 2014
IDA Summer of Code is Linköping University’s response to Google Summer of Code. Students can send in...
over a year ago
IDA Summer of Code is Linköping University’s response to Google Summer of Code. Students can send in a project of their choice and if selected they get paid to work on it for 4 weeks during the summer. In return the university get to show off the students and their projects in...
./techtipsy
Disabling the crappy Broadcom Bluetooth adapter in your ThinkPad T430 running Linux
You’ve disabled the boneheaded Lenovo WiFi adapter whitelist using a tool like
1vyrain, installed a...
over a year ago
You’ve disabled the boneheaded Lenovo WiFi adapter whitelist using a tool like
1vyrain, installed a better adapter like the
Intel Dual Band Wireless-AC 7260,
and found that Bluetooth is not working as intended on your ThinkPad T430
running Linux?
Here’s a guide on what you can...
computers are bad
2023-01-16 huff-duff
We've talked a fair amount about HF radio recently, in the context of OTH
radar. Recall that an...
a year ago
We've talked a fair amount about HF radio recently, in the context of OTH
radar. Recall that an extremely useful property of HF radio here is that HF
frequencies can reflect off of the upper layers of the atmosphere, causing them
to rebound towards earth at a range much further...
./techtipsy
The best laptop is the one somebody else had
In 2011, I was finishing 9th grade. As a gift, I got to choose a laptop in the
400 EUR range. I...
a month ago
In 2011, I was finishing 9th grade. As a gift, I got to choose a laptop in the
400 EUR range. I ended up picking
an ASUS Eee PC 1201PN. It was new and the
first computer in my life that was 100% mine, but awfully slow for a lot of tasks.
It was so slow that I ended up giving...
Jonas Hietala
Postmortem: MenuCity
Good times, good times. MenuCity has been out a while and thanks for all the positive and...
over a year ago
Good times, good times. MenuCity has been out a while and thanks for all the positive and constructive feedback guys, it’s like my food doing this (programming is my air and the fun is the water… err). Anyway here’s the postmortem of my latest, and greatest, game.
Let’s start...
Applied Cartography
Applied Cartography × Val Town
Had a blast live-coding some experimentations with Steve and Shovel yesterday using Val Town. (If...
a month ago
Had a blast live-coding some experimentations with Steve and Shovel yesterday using Val Town. (If you haven't used Val, well, watch the stream — think live, zero-deploy code snippets that can be arbitrarily extended and executed.)
Reflecting on the experience, the most exciting...
Good Enough
Why We Built Quack (Beta)
Today we're launching a tiny beta tool called Quack. It is a simple utility for you to share a...
a year ago
Today we're launching a tiny beta tool called Quack. It is a simple utility for you to share a beautifully rendered version of any markdown text. Type away in our simple editor. When you're done writing, click Share to grab the link for sending to others. There are no servers in...
Jonas Hietala
Moving private repositories to Bitbucket
Long overdue, I recently moved my private repositories from Github to Bitbucket. Github is great of...
over a year ago
Long overdue, I recently moved my private repositories from Github to Bitbucket. Github is great of courseand they even gave me a free students account and I still host all my public repositories there. Still, Bitbucket has unlimited free private repositories for up to 5 users...
Old Vintage...
Finally, an MOS 7600/7601 Video Game Array data sheet
A quick one. Many of you are aware of my rather abnormal fascination with the MOS 7600/7601, MOS...
a year ago
A quick one. Many of you are aware of my rather abnormal fascination with the MOS 7600/7601, MOS Technology's dedicated "Pong-on-a-chip" (from the company that brought you my favourite CPU, the MOS 6502) that's actually a rather sophisticated microcontroller for the era. I own...
Jonas Hietala
A Simple Thought
I wrote that we where doing some microprogramming, making the processor work etc. We had a lab about...
over a year ago
I wrote that we where doing some microprogramming, making the processor work etc. We had a lab about that yesterday and I was very, very nervous. The preparations weren’t that hard, but they where very bothersome. Converting the instructions to binary/hex by hand is never nice....
Willem's Blog
Harvesting boredom to let creativity flourish
What does it mean for my state of mind and creativity if I am no longer be constantly connected to...
over a year ago
What does it mean for my state of mind and creativity if I am no longer be constantly connected to the Internet using a smartphone.
Arduino Blog
A DIY bottle-labeling machine perfect for homebrewers
While it is certainly possible (and common) to put homebrewed beer into kegs, that requires...
6 months ago
While it is certainly possible (and common) to put homebrewed beer into kegs, that requires regulated gas and large refrigeration space. A keg is also more difficult to transport and overkill if you just want to bring a few beers to a friend’s backyard BBQ. For those reasons,...
Jonas Hietala
I Made It!
It’s been over a year, but I haven’t lost (most) my touch yet! For the second time I’ve completed a...
over a year ago
It’s been over a year, but I haven’t lost (most) my touch yet! For the second time I’ve completed a Ludum Dare! Not an easy feat and yet there are tons of games that look absolutely wonderful. I’m not there yet but now I have at least gotten back into game making again, long...
Arduino Blog
An engineer’s journey to bring the ultimate TMJ pain relief tool to market
To the average person, invention and new product development seem like pretty straightforward...
2 months ago
To the average person, invention and new product development seem like pretty straightforward processes; you come up with a killer idea, do the engineering work to cobble together a working prototype, have a truckload of units manufactured, and then sell those to turn a profit....
Home on Erik...
Slides from NYC Machine Learning talk
Slides from the talk. Slightly edited because (a) some of the slides make little sense taken out of...
over a year ago
Slides from the talk. Slightly edited because (a) some of the slides make little sense taken out of context (b) Slideshare seem to have problem converting some of the stuff.
Collaborative filtering at Spotify from Erik Bernhardsson
Jonas Hietala
2019 in Review
As is tradition a quick rundown of the year is due. It’s been good to do as it makes me reflect on...
over a year ago
As is tradition a quick rundown of the year is due. It’s been good to do as it makes me reflect on the past year, and see that I did indeed do some things, and to look ahead a little.
2019 Non-Geek Achievements
Played around with Isidor.
It’s hard to describe how happy a kid can...
Engineers Need Art
Building Quarter-Cab - Phase I
Lets build a simple virtual pinball controller to bring more immersion to your game.
7 months ago
Lets build a simple virtual pinball controller to bring more immersion to your game.
Home on Erik...
Vote for our SXSW panel!
If you have a few minutes, you should check out mine and Chris Johnson‘s panel proposal. Go here and...
over a year ago
If you have a few minutes, you should check out mine and Chris Johnson‘s panel proposal. Go here and vote: http://panelpicker.sxsw.com/vote/24504
Algorithmic Music Discovery at Spotify
****Spotify crunches hundreds of billions of streams to analyze user's music taste and provide...
Jonas Hietala
My MCU movie ranking
I did the MCU Movie Re-Watch again this year in preparation for Avengers: Endgame. I wasn’t a huge...
over a year ago
I did the MCU Movie Re-Watch again this year in preparation for Avengers: Endgame. I wasn’t a huge MCU fan before doing the same re-watch for Infinity War, but after that I became one.
For fun I tried to rank the movies as I saw them, this is some sort of accounting my rankings...
Notes on software...
Administering Kubernetes is hard
Kubernetes is easy to use after some exposure; it's pretty convenient
too. But it is super hard to...
over a year ago
Kubernetes is easy to use after some exposure; it's pretty convenient
too. But it is super hard to set up.
eksctl is a good tool for folks who don't want to
spend hours/days/weeks debugging VPC configuration in 1000s of lines
of CloudFormation. None of the other tools seem to be...
Jonas Hietala
Writing a Pollen lexer in Pygments
After writing a few blog posts about Pollen I started getting annoyed that I didn’t have syntax...
over a year ago
After writing a few blog posts about Pollen I started getting annoyed that I didn’t have syntax highlighting for the code snippets. So I did a bit of fooling around with Pygments, and it turns out writing a custom lexer isn’t that unreasonable, so here’s how I did it.
Pollen...
Arduino Blog
Meet Mr. Wallplate, an animatronic wall plate that speaks to you
Interactive robots always bring an element of intrigue, and even more so when they feature unusual...
7 months ago
Interactive robots always bring an element of intrigue, and even more so when they feature unusual parts and techniques to perform their actions. Mr. Wallplate, affectionately named by Tony K on Instructables, is one such robot that is contained within an electrical wall plate...
Arduino Blog
This portable Starmap could be your guide to the cosmos
Estimates vary, but there are generally a few thousand stars bright enough to see in the sky on a...
6 months ago
Estimates vary, but there are generally a few thousand stars bright enough to see in the sky on a clear, moonless, cloudless night away from city lights. You might be able to identify a couple of them, along with a handful of constellations. But what about the rest? If they...
Vitalik Buterin's...
Review: museums of the future, Dubai and Tokyo
4 months ago
Arduino Blog
This rolling ball game brings Skee-Ball-style fun from the arcade to your home
Ask your friends about their favorite games at the arcade and the most common answer will likely be...
5 months ago
Ask your friends about their favorite games at the arcade and the most common answer will likely be Skee-Ball. But while many other popular arcade games have viable at-home alternatives, Skee-Ball doesn’t — at least not unless you’re willing to spend a serious amount of money....
Jonas Hietala
Incomplete game coming up
Man I’m far too much of a perfectionist, with this mentality I’ll never get anything done -...
over a year ago
Man I’m far too much of a perfectionist, with this mentality I’ll never get anything done - seriously. I spent far too many hours, even days, figuring out in my mind how the game should be and I started off going for nothing less than just that. But it turned out to be a lot...
Posts on Made of...
Thoughts On Kubernetes
I spent a while the last week porting livegrep.com from running directly AWS to running on...
over a year ago
I spent a while the last week porting livegrep.com from running directly AWS to running on Kubernetes on Google’s Cloud Platform (specifically, the google container engine, which provisions and manages the cluster for me).
I left this experience profoundly enthusiastic about the...
Notes on software...
Writing a web server from scratch: 1. HTTP and sockets
Say we have some HTML:
<html>
<body>
<h1>Hello world!</h1>
</body>
</html>
And say we'd...
over a year ago
Say we have some HTML:
<html>
<body>
<h1>Hello world!</h1>
</body>
</html>
And say we'd like to be able to render this page in a web browser. If
the server is hosted locally we may want to enter
localhost:9000/hello-world.html in the address bar, hit
enter, make a...
Computer Ads from...
Ergotron's MacTilt
MacTilt is the Solution
3 weeks ago
Vitalik Buterin's...
Alternatives to selling at below-market-clearing prices for achieving fairness (or community...
over a year ago
Home on Erik...
Installing TensorFlow on AWS
Curious about Google's newly released TensorFlow? I don't have a beefy GPU machine, so I spent some...
over a year ago
Curious about Google's newly released TensorFlow? I don't have a beefy GPU machine, so I spent some time getting it to run on EC2. The steps on how to reproduce it are pretty brutal and I wouldn't recommend going through it unless you want to waste five hours of your live.
Home on Erik...
More Luigi: Presentation from OSCON
I was in Portland, OR for a few days hanging out at OSCON. Was fun. I also talked a bit about...
over a year ago
I was in Portland, OR for a few days hanging out at OSCON. Was fun. I also talked a bit about Luigi:
Next week I'm presenting at the NYC Predictive Analytics meetup together with Blake Shaw from Foursquare.
Old Vintage...
One-parting some Commodore 64 utilities for fun and profit
I've got a few retrocomputing bucket list items I'm slowly working down, and a couple of them...
a month ago
I've got a few retrocomputing bucket list items I'm slowly working down, and a couple of them involve some little Commodore 64 games I've had kicking around on the backburner. However, every game needs media assets, and while there are many great tools for doing art on your...
computers are bad
2024-12-04 operators on the front
At the very core of telephone history, there is the telephone operator. For a
lot of people, the...
2 weeks ago
At the very core of telephone history, there is the telephone operator. For a
lot of people, the vague understanding that an operator used to be involved is
the main thing they know about historic telephony. Of course, telephone
historians, as a group, tend to be much more...
Odds and Ends of...
Four big US election takes: Yes, it was the woke stuff.
Plus how to know when the Democrats are taking their problems seriously, the one good thing Trump...
a month ago
Plus how to know when the Democrats are taking their problems seriously, the one good thing Trump might do, and why the polls were right
Ken Shirriff's blog
Reverse-engineering a three-axis attitude indicator from the F-4 fighter plane
We recently received an attitude indicator for the F-4 fighter plane, an instrument that
uses a...
2 months ago
We recently received an attitude indicator for the F-4 fighter plane, an instrument that
uses a rotating ball to show the aircraft's orientation and direction.
In a normal aircraft, the artificial horizon shows the orientation in two axes (pitch and roll), but the F-4...
Neil Madden
API Security in Action is published!
I wasn’t expecting it so quickly, so it caught me a little off guard, but API Security in Action is...
over a year ago
I wasn’t expecting it so quickly, so it caught me a little off guard, but API Security in Action is now finally published. PDF copies are available now, with printed copies shipping by the end of the month. Kindle/ePub take a little bit longer but should be out in a few weeks...
Arduino Blog
This Arduino-controlled machine dispenses the perfect bowl of cereal
Breakfast cereal is controversial. Milk or cereal first? Best cereal to milk ratio? Favorite cereal?...
7 months ago
Breakfast cereal is controversial. Milk or cereal first? Best cereal to milk ratio? Favorite cereal? Most attractive mascot? The opportunities for debate never end. But we can all agree that consistency is key when it comes to the milk:cereal ratio — nobody changes that up from...
Willem's Blog
Migrating to the Cloud
Helping a customer clear its on-premise data room and migrate to the cloud: an adventure full of...
over a year ago
Helping a customer clear its on-premise data room and migrate to the cloud: an adventure full of cables, cabinets and bandwidth!
./techtipsy
Why you might not want to publicly self-host a Wikipedia clone
A while ago I wrote about how easy it is to download an archive of Wikipedia and host it...
a year ago
A while ago I wrote about how easy it is to download an archive of Wikipedia and host it anywhere
you want using Kiwix.
I’m still hosting Kiwix sites publicly, but here are a few things you might want
to consider before doing so yourself.
The spam
I have a specific e-mail address...
computers are bad
2023-06-12 radio on the tv
Like many people in my generation, my memories of youth are heavily defined by
cable television. I...
a year ago
Like many people in my generation, my memories of youth are heavily defined by
cable television. I was fortunate enough to have a premium cable package in
my childhood home, Comcast's early digital service based on Motorola equipment.
It included a perk that fascinated me but...
Louwrentius
'Linux: monitor a directory for files'
Inotify is a mechanism in the Linux kernel that reports when a file system
event occurs.
The...
over a year ago
Inotify is a mechanism in the Linux kernel that reports when a file system
event occurs.
The inotifywait comand line utility can be used in shell scripts to monitor
directories for new files. It can also be used to monitor files for changes.
Inotifywait must be installed and is...
Arduino Blog
These Shattered Space helmet replicas stay video game accurate using an Arduino Nano
Starfield, a game set in the vast expanse of our galaxy, is receiving a new expansion called...
2 months ago
Starfield, a game set in the vast expanse of our galaxy, is receiving a new expansion called “Shattered Space” in which players can don novel weapons and gear to take on the latest challenge. As part of its release, the expansion’s publisher Bethesda reached out to cosplayer...
Louwrentius
Benefits of hyper-threading on a Core 7i processor
I had some wave files that I wanted to encode to mp3. I wrote a small parallel
processing framework...
over a year ago
I had some wave files that I wanted to encode to mp3. I wrote a small parallel
processing framework for this job. It executes parallel jobs so I can benefit
from the 4 cores + 4 virtual cores of my new Core 7i 920 processor.
The framework is based on some shell scripts running...
watchTowr Labs -...
Visionaries Have Democratised Remote Network Access - Citrix Virtual Apps and Desktops...
Well, we’re back again, with yet another fresh-off-the-press bug chain (and associated Interactive...
a month ago
Well, we’re back again, with yet another fresh-off-the-press bug chain (and associated Interactive Artifact Generator). This time, it’s in Citrix’s “Virtual Apps and Desktops” offering.
This is a tech stack that enables end-users (and likely, your friendly neighbourhood...
Engineers Need Art
Virtual Pinhead
Discovering virtual pinball, a hobbyist community devoted to it, and building a full-size virtual...
8 months ago
Discovering virtual pinball, a hobbyist community devoted to it, and building a full-size virtual pinball cabinet.
Notes on software...
Container scheduling strategies for integration testing 14 different databases in Github Actions
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here
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over a year ago
This is an external post of mine. Click
here
if you are not redirected.
Jonas Hietala
Death to the Forum
Well it was fun while it lasted, but now it’s gone and it’ll stay gone for a long time I think. It...
over a year ago
Well it was fun while it lasted, but now it’s gone and it’ll stay gone for a long time I think. It was mainly a test to see if I could do it and I’m really proud of my styling of it but it’s deader than in a grave, which isn’t really surprising, and it bothered me that I didn’t...
Louwrentius
The future of ZFS now that OpenSolaris is dead
With the probable loss of OpenSolaris, there may be another, maybe more
devastating loss.
The very...
over a year ago
With the probable loss of OpenSolaris, there may be another, maybe more
devastating loss.
The very popular and very advanced Zetabyte File System (ZFS)
The only open source platform that actively supports ZFS is FreeBSD. And they
just 'copied' the code from OpenSolaris. Are they...
Good Enough
TIL: Listen for JavaScript events only once!
A common thing I find myself doing in Javascript is adding some event driven behavior that I only...
a year ago
A common thing I find myself doing in Javascript is adding some event driven behavior that I only want to happen once. Let’s say I have a big button that starts the process of lowering a certain spy into a pool of certain doom — I don’t want a second button press to awkwardly...
Arduino Blog
Arduino partners with RS/OKdo strategically to further expand the China Market
Arduino is excited to announce a strategic new partnership with RS/OKdo, a prominent leader in the...
a month ago
Arduino is excited to announce a strategic new partnership with RS/OKdo, a prominent leader in the distribution of industrial and electronic equipment. This collaboration marks a significant step forward in bringing Arduino’s technology closer to China’s thriving maker community...
Jonas Hietala
Bitcoin Cash needs a Specification
I’m not a Bitcoin developer, I’m just some guy looking in from the outside. Lately there’s been a...
over a year ago
I’m not a Bitcoin developer, I’m just some guy looking in from the outside. Lately there’s been a bunch of heated debates between the different Bitcoin Cash developer teams. Something that stood out from all the noise was problems with communications and a lack of specification...
On Life and Lisp
The first conformant M1 GPU driver
Conformant OpenGL® ES 3.1 drivers are now available for M1- and
M2-family GPUs. That means the...
a year ago
Conformant OpenGL® ES 3.1 drivers are now available for M1- and
M2-family GPUs. That means the drivers are compatible with any OpenGL ES
3.1 application. Interested? Just install Linux!
For existing Asahi Linux users,
upgrade your system with dnf
upgrade (Fedora) or pacman
-Syu...
computers are bad
2024-08-19 mining for meteors
Billboards
Route 66 is often viewed through the lens of its billboards. The Jack Rabbit
Trading...
4 months ago
Billboards
Route 66 is often viewed through the lens of its billboards. The Jack Rabbit
Trading Post, a small store a few miles out of Joseph City, would hardly be
remembered were it not for its billboards spanning four states. The tradition
of far-advance billboards is still...
Louwrentius
Scrub your NAS hard drives regularly if you care about your data
Introduction
Lots of people run a NAS at home. Maybe it's a COTS device from one of the well-known...
over a year ago
Introduction
Lots of people run a NAS at home. Maybe it's a COTS device from one of the well-known vendors1, or it's a custom build solution (DIY2) based on hardware you bought and assembled yourself.
Buying or building a NAS is one thing, but operating it in a way that assures...
Louwrentius
My home network setup based on managed switches and VLANs
My home networking setup
I live in a two story apartment, with on the top floor my utilities closet...
over a year ago
My home networking setup
I live in a two story apartment, with on the top floor my utilities closet and my living room. The bottom floor contains a bedroom with all my servers and networking gear.
So this is my setup (click for a bigger version):
I like to run my own router but...
Home on Erik...
Luigi talk tomorrow
At NYC Data Science meetup! Unfortunately the space is full but the talk will be livestreamed –...
over a year ago
At NYC Data Science meetup! Unfortunately the space is full but the talk will be livestreamed – check out the meetup web page for a link tomorrow.
Jonas Hietala
March Theme: 10 seconds
Well well here’s something interesting. The Experimental Gameplay Project has given us a really...
over a year ago
Well well here’s something interesting. The Experimental Gameplay Project has given us a really interesting thing to focus on: Time. Like Braid, it’s time for us to make something interesting with time itself. 10 seconds is the constraint and that’s not a lot, but perhaps enough?
Jonas Hietala
I designed my own keyboard layout. Was it worth it?
Almost two and a half years ago I embarked on the journey to change keyboard layout.
At first I...
a year ago
Almost two and a half years ago I embarked on the journey to change keyboard layout.
At first I tried out existing ones, but it didn’t take long before I figured it’s better to develop my own—and things went downhill fast from there.
(Some) combos of the T-34 layout.
But now...
Posts on Made of...
Iron Blogger: Blogging for Beer
So, you may have noticed that I suddenly started updating this blog for the first time in a while....
over a year ago
So, you may have noticed that I suddenly started updating this blog for the first time in a while. The reason is that I’ve recently started an ongoing event with a whole bunch of friends around here to encourage us to blog more.
Like so many good ideas, it all started with a...
./techtipsy
Whacky setups: seedbox on a wall
The Orange Pi Zero is one hell of an SBC. It has served as
a Wi-Fi access point for months without...
over a year ago
The Orange Pi Zero is one hell of an SBC. It has served as
a Wi-Fi access point for months without issues
and as a testbed for playing around with MySQL.
I wanted it to be a useful device again, but had trouble finding an use case for it due to its hardware limitations.
After...
./techtipsy
ThinkPad as a server: third time's the charm
This is a follow-up to my two previous attempts on this topic:
Can a laptop from 2012 be a viable...
2 months ago
This is a follow-up to my two previous attempts on this topic:
Can a laptop from 2012 be a viable home server?
ThinkPad as a server: the follow-up
Since then, I’ve had quite a few changes to my home server setup:
I put my home server stuff on an IKEA pegboard
I tried the...
Arduino Blog
Finally, you can DIY your own espresso machine
Caffeine lovers take their coffee very seriously and that is most apparent when you dive into the...
3 months ago
Caffeine lovers take their coffee very seriously and that is most apparent when you dive into the world of espresso machines. To satisfy enthusiasts, an espresso machine needs to provide precise control over temperature, pressure, and flow to enable the perfect pull. But if...
Good Enough
TIL: Easily Support Gravatars in Rails
We’re building some software where we’d like to display avatars for email contacts
even if they...
10 months ago
We’re building some software where we’d like to display avatars for email contacts
even if they aren’t users of our software.
While Gravatar is a relic of Web 2.0,
we’ve found that there are still a significant number of people who have their
email addresses in that...
Vitalik Buterin's...
Moving beyond coin voting governance
over a year ago
Applied Cartography
PSA: mess around with Keystatic
We've been using Keystatic in Buttondown for around six months now: we migrated most of the content...
9 months ago
We've been using Keystatic in Buttondown for around six months now: we migrated most of the content on the marketing site (which is backed by Next) from MDX onto Keystatic, and were so happy with the experience that the upcoming rebuild of the docs site will be featuring...
Lighthouse Blog
How to rate content and find it again
6 months ago
Notes on software...
dsq: Commandline tool for running SQL queries against JSON, CSV, Excel, Parquet, and more.
This is an external post of mine. Click
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over a year ago
This is an external post of mine. Click
here
if you are not redirected.
computers are bad
2023-04-30 los alamos - compound to county pt II
Where we left off, Los Alamos had become a county, but the town itself
continued to be directly...
a year ago
Where we left off, Los Alamos had become a county, but the town itself
continued to be directly administered by the Atomic Energy Commission (AEC).
The Atomic Energy Communities Act (AECA) mandated the AEC to dispose of the
towns it owned by transferring the property to private...
Old Vintage...
An Apple district manager's Macintosh Portable in 1989-91 (featuring GEIS AppleLink and a look at...
a late prototype Macintosh Portable. But it turns out it's not merely notable for what it is than...
9 months ago
a late prototype Macintosh Portable. But it turns out it's not merely notable for what it is than what it has on it: a beta version of System 6.0.6 (the doomed release that Apple pulled due to bugs), Apple sales databases, two online services — the maligned Mac Prodigy client,...
OH8HUB’s Substack
Eliminating Radio Interference from Apple charger
Apple's product design teams should do a better job eliminating unwanted radio frequency emissions...
a year ago
Apple's product design teams should do a better job eliminating unwanted radio frequency emissions from their product!
Engineers Need Art
VPX Scripting - Part 3 (Cut & Paste)
Sound code is added in this third in a series of posts about scripting Visual Pinball tables.
8 months ago
Sound code is added in this third in a series of posts about scripting Visual Pinball tables.
Louwrentius
Compiling Multicore PAR2 on Ubuntu 12.04 LTS Precise Pangolin
If you want to compile PAR2 with multicore support on Linux, it may not work right away from source....
over a year ago
If you want to compile PAR2 with multicore support on Linux, it may not work right away from source. I used this version of PAR2 with multicore support.
Update 2015: the original link is dead, I foud a copy of the source and put it on my own site here for you to download.
First,...
Opsbros
Debug Header
After watching a livestream by UnexpectedMaker struggling to put probe pins on his Stepper Motor...
over a year ago
After watching a livestream by UnexpectedMaker struggling to put probe pins on his Stepper Motor driver connected to a Raspberry Pi, I thought a breakout header might help; so I whipped up this little board.
Simply Explained
EZStore: a tiny serverless datastore for IoT data (DynamoDB + Lambda)
I've been working on a few IoT projects recently, and while prototyping, I need a simple but...
over a year ago
I've been working on a few IoT projects recently, and while prototyping, I need a simple but flexible data store. I just want to push data to an API and query and visualize it later on.There are many solutions for this, but most are expensive or very limited. So I set out to...
seangoedecke.com RSS...
How I ship projects at big tech companies
I have shipped a lot of different projects over the last ~10 years in tech. I often get tapped to...
a month ago
I have shipped a lot of different projects over the last ~10 years in tech. I often get tapped to lead new ones when it’s important to get…
Odds and Ends of...
Nobody knows what the National Data Library is (not even the government)
A policy wrapped in a mystery inside an enigma
a month ago
A policy wrapped in a mystery inside an enigma
Abort Retry Fail
The History of Windows NT 3.1
A Highly Portable Future
a year ago
Christian Selig
Introducing Tiny Storage: a small, lightweight UserDefaults replacement
Hey I'm a developer not an artist
Following my last blog post about difficulties surrounding...
2 months ago
Hey I'm a developer not an artist
Following my last blog post about difficulties surrounding UserDefaults and edge cases that lead to data loss (give it a read if you haven’t, it’s an important precursor to this post!), I wanted to build something small and lightweight that...
Notes on software...
Benchmarking esbuild, swc, tsc, and babel for React/JSX projects
This is an external post of mine. Click
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over a year ago
This is an external post of mine. Click
here
if you are not redirected.
computers are bad
2023-10-15 go.com
Correction: a technical defect in my Enterprise Content Management System
resulted in the email...
a year ago
Correction: a technical defect in my Enterprise Content Management System
resulted in the email having a subject that made it sound like this post would
be about the classic strategy game Go. It is actually about a failed website.
I regret the error; the responsible people have...
Louwrentius
FFmpeg performance on a Core i7 920 @ 3.6 Ghz
The system i'm running is a Core i7 920 @ 3.6 Ghz.
I am transcoding a DVD (Grave Of The Fire Flies)...
over a year ago
The system i'm running is a Core i7 920 @ 3.6 Ghz.
I am transcoding a DVD (Grave Of The Fire Flies) to iPod format (640x480
x264).
Thread support is enabled, to FFmpeg uses about 250% CPU. That's 2.5 of the 4
cores available. If possible, I would have liked to see it use all four...
Jonas Hietala
Tufte style sidenotes and marginnotes in Pollen
When evaluating Pollen I complained about markdown/pandoc’s lack of sidenote handling. I have solved...
over a year ago
When evaluating Pollen I complained about markdown/pandoc’s lack of sidenote handling. I have solved it for Pollen but felt it deserved it’s own post.
A caveat: I generated Tufte CSS style sidenotes and marginnotes which made it more complex than if I had simply generated...
Jonas Hietala
Building the GH60
I’ve finally completed my first custom made keyboard. I’m still missing stabilizers and some smaller...
over a year ago
I’ve finally completed my first custom made keyboard. I’m still missing stabilizers and some smaller screws to hold it all together but I’ve been using it the last days and I thought I’d share.
The hardware
Several years ago I joined the geekhack forum and I joined in a few group...
Good Enough
Cool URLs Don’t Die
If you've been reading our newsletter (and you should be reading our newsletter) you will have seen...
a year ago
If you've been reading our newsletter (and you should be reading our newsletter) you will have seen that I've been building some printers.
This is actually the resurrection of a project I began in 2012 with the help of some colleagues, and while I've been updating it, it's been...
Posts on Made of...
Confessions of a programmer: I hate code review
Most of the projects I've been working on today have fairly strict code review policies. My work...
over a year ago
Most of the projects I've been working on today have fairly strict code review policies. My work requires code review on most of our code, and as we bring on an army of interns for the summer, I've been responsible for reviewing lots of code. Additionally, about five months ago...
Posts on Made of...
Reflections on software performance
At this point in my career, I’ve worked on at least three projects where performance was a defining...
over a year ago
At this point in my career, I’ve worked on at least three projects where performance was a defining characteristic: Livegrep, Taktician, and Sorbet (I discussed sorbet in particular last time, and livegrep in an earlier post). I’ve also done a lot of other performance work on the...
Simply Explained
Year in review: 2022
Every new year I reflect on the previous year and set new goals. I'm focusing primarily on my...
a year ago
Every new year I reflect on the previous year and set new goals. I'm focusing primarily on my YouTube channel and newsletter, but there are personal reflections in here as well. Last year was an off year for me, and I'm gearing up to make up for lost time in 2023.
./techtipsy
FOSDEM 2024: my experience, some notes and tech tips
I finally went to FOSDEM. I’m sleep-deprived, completely exhausted, but incredibly excited
about the...
10 months ago
I finally went to FOSDEM. I’m sleep-deprived, completely exhausted, but incredibly excited
about the whole experience.
I’ve split this post into three separate sections.
overall notes on the conference and the city
less technical, but sheds light on the FOSDEM experience
the...
./techtipsy
ThinkPad T40: it can still run modern Linux, for now
I recently busted out my old ThinkPad T40, the last of the OG IBM ThinkPads.
I picked it up some...
7 months ago
I recently busted out my old ThinkPad T40, the last of the OG IBM ThinkPads.
I picked it up some time around my university days because I liked collecting
ThinkPads at the time, and it was a nice complement to my existing ThinkPad T60
and T430.
The battery is dead, but everything...
Louwrentius
Ubuntu and full disk encryption (FDE)
Ubuntu is based on Debian Linux. As part of a regular Debian installation, you
can choose to create...
over a year ago
Ubuntu is based on Debian Linux. As part of a regular Debian installation, you
can choose to create an encrypted disk volume based on LUKS. This is different
from the option within the Ubuntu installation to encrypt home directories. To
be able to install Ubuntu and use full disk...
Willem's Blog
Google Analytics vs AWStats
Comparing Google Analytics with AWStats to find out where they differ and which is better.
over a year ago
Comparing Google Analytics with AWStats to find out where they differ and which is better.
Jonas Hietala
addwatch: resource exhausted
While tampering with Hakyll and running site preview I stumbled upon this error message:
site:...
over a year ago
While tampering with Hakyll and running site preview I stumbled upon this error message:
site: addWatch: resource exhausted (No space left on device)
At first I tried to clear /tmp but, so clearly the device did have some space left. After a bit of googling I found a solution...
Willem's Blog
Repairing a Giro AEON bicycle helmet
Try fixing your Giro bicycle helmet? I went through some trouble to do it! Read along to find out...
over a year ago
Try fixing your Giro bicycle helmet? I went through some trouble to do it! Read along to find out how.
Home on Erik...
More recommender algorithms
I wanted to share some more insight into the algorithms we use at Spotify. One matrix factorization...
over a year ago
I wanted to share some more insight into the algorithms we use at Spotify. One matrix factorization algorithm we have used for a while assumes that we have user vectors $$ bf{a}_u $$ and item vectors $$ bf{b}_i $$ .
Willem's Blog
Cash is king, or is it?
Is the time right to ditch the wallet?
over a year ago
Is the time right to ditch the wallet?
Home on Erik...
My issue with GPU-accelerated deep learning
I've been spending several hundred bucks renting GPU instances on AWS over the last year. The...
over a year ago
I've been spending several hundred bucks renting GPU instances on AWS over the last year. The speedup from a GPU is awesome and hard to deny. GPUs have taken over the field. Maybe following the footsteps of Bitcoin mining there's some research on using FPGA (I know very little...
./techtipsy
The little Wi-Fi AP that could
I have a bad habit of testing things whenever a “good” idea pops into my head. This is a short...
over a year ago
I have a bad habit of testing things whenever a “good” idea pops into my head. This is a short overview of one of them.
The Orange Pi Zero is a SBC (single board computer) that has a slow 32-bit ARM 4 core CPU, 512MB of RAM and no display output.
It’s actually quite OK for many...
./techtipsy
I have a 'Dall UD19PB ThundeRbglt Dock': my experience with the HP Elitebook 845 G9
I’ve decided to give a new laptop a test drive, mainly because I had the
opportunity at work, and...
over a year ago
I’ve decided to give a new laptop a test drive, mainly because I had the
opportunity at work, and also out of morbid curiosity.
It’s the HP Elitebook 845 G9, and it has pretty good specifications:
CPU: AMD Ryzen 7 6800U
RAM: 2x16GB DDR5
Storage: 512GB KIOXIA NVMe SSD...
Arduino Blog
Easily add Python-controlled GPIO pins to any computer
Let’s say that, hypothetically, you wanted to use your computer to blink an LED or read the state of...
6 months ago
Let’s say that, hypothetically, you wanted to use your computer to blink an LED or read the state of a button. Could you? Almost certainly not — at least not without additional hardware. Most modern computers don’t provide any interface for direct interaction with low-level...
Odds and Ends of...
Christmas Mailbag - Questions Wanted!
Ask me stuff!
a week ago
Willem's Blog
Creating a minimal iPhone stand
Today I created a minimal iPhone stand from oak wood. I used a single piece of wood to get it done.
over a year ago
Today I created a minimal iPhone stand from oak wood. I used a single piece of wood to get it done.
Notes on software...
HTML event handler attributes: down the rabbit hole
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over a year ago
This is an external post of mine. Click
here
if you are not redirected.
Notes on software...
Writing a document database from scratch in Go: Lucene-like filters and indexes
In this post we'll write a rudimentary document database from scratch
in Go. In less than 500 lines...
over a year ago
In this post we'll write a rudimentary document database from scratch
in Go. In less than 500 lines of code we'll be able to support the
following interactions, inspired by Elasticsearch:
$ curl -X POST -H 'Content-Type: application/json' -d '{"name": "Kevin", "age": "45"}'...
Good Enough
Season 1, Issue 4: Issue 4-evah
0. It’s Been a Long Time
Sorry 4 the silence these past weeks. Life happened fast and furious....
over a year ago
0. It’s Been a Long Time
Sorry 4 the silence these past weeks. Life happened fast and furious. Barry’s daughters all had marching band, and he chaperoned 4 the parades. His eldest daughter also went and got a boyfriend. Shawn’s been feeling a little under the weather, and his two...
Old Vintage...
Refurb weekend: Data General/One (and the worst LCD in the world)
I mentioned earlier that while I prefer specializing in non-x86 laptops, that doesn't mean I don't...
8 months ago
I mentioned earlier that while I prefer specializing in non-x86 laptops, that doesn't mean I don't collect interesting or unusual x86 laptops, like the Brother GeoBook NB-60 (I finally tracked down a mostly working NB-80C, the top of the line model, which will be the subject of a...
Louwrentius
8 TB RAID 6 Linux software RAID using EXT4
Mobo: Asus P5Q-EM DO ( 6x sata)
CPU: Core 2 Duo E7400
RAM: 4 GB
Controller; HighPoint RocketRAID...
over a year ago
Mobo: Asus P5Q-EM DO ( 6x sata)
CPU: Core 2 Duo E7400
RAM: 4 GB
Controller; HighPoint RocketRAID 2314 (16x poorten)
PSU: CooMas Silent Pro M 600W ATX2 (definitely not overkill)
HD: Samsung 1 TB SAT2 HD103UJ (10x)
OS: Debian Lenny with custom kernel (backported)
FS: EXT4
RAID...
Electronics etc…
Fake Parallel Printer - A Parallel Port Traffic Capturing Tool
Introduction
What Is Out There?
The Parallel Printer Port
Fake Printer Top Level Design Choices
Fake...
a year ago
Introduction
What Is Out There?
The Parallel Printer Port
Fake Printer Top Level Design Choices
Fake Printer HW Details
PCB Revision 1
PCB Revision 2
Firmware
Building a Fake Printer Tool Yourself
Programming the Raspberry Pico
Fake Printer as a USB Serial Device on your...
Push to Prod
When Overwhelmed, Make a List of Questions
In my first big project at Netflix, I learned this disturbingly simple problem-solving technique.
4 months ago
In my first big project at Netflix, I learned this disturbingly simple problem-solving technique.
Vitalik Buterin's...
What in the Ethereum application ecosystem excites me
over a year ago
Louwrentius
Google DNS - what to think of it?
Google now provide an open DNS service. At first I was scared that they use
their service to get...
over a year ago
Google now provide an open DNS service. At first I was scared that they use
their service to get information about users.
However, their privacy statement tells us that no personal identifiable
information is stored for longer than 48 hours. The permanent logs do not
contain such...
Good Enough
Pika: Start Your Happy Blog
Have you thought about starting or restarting a blogging habit? Have you wanted to write on the...
10 months ago
Have you thought about starting or restarting a blogging habit? Have you wanted to write on the internet, but at your own place and at your own address rather than on a social network? Have you been overwhelmed by the online writing options that you’ve found? Well, have we got...
Arduino Blog
Create your own affordable Arduino-powered smart glasses
When Google Glass launched in 2013, the public opinion seemed to be “interesting technology, but the...
7 months ago
When Google Glass launched in 2013, the public opinion seemed to be “interesting technology, but the world isn’t ready yet.” Now that more than a decade has passed, the world may finally be ready — especially with the omission of controversial features like video recording. If...
./techtipsy
Quest towards energy efficiency part 1: the water heater
While listening to the SelfHosted podcast, one of the hosts brought up their peculiar...
over a year ago
While listening to the SelfHosted podcast, one of the hosts brought up their peculiar living
arrangement multiple times. Essentially, he and his family are living in an RV that runs off of batteries, has solar
panels, utilizes Home Assistant for automation, supports multiple...
Posts on Made of...
What MongoDB got Right
MongoDB is perhaps the most-widely-mocked piece of software out there right now.
While some of the...
over a year ago
MongoDB is perhaps the most-widely-mocked piece of software out there right now.
While some of the mockery is out-of-date or rooted in misunderstandings, much of it is well-deserved, and it’s difficult to disagree that much of MongoDB’s engineering is incredibly simplistic,...
./techtipsy
My cat water fountain comes with a spicy USB power adapter
It turns out that you can’t trust any USB type A power adapter to be within spec.
I have a Catit...
a year ago
It turns out that you can’t trust any USB type A power adapter to be within spec.
I have a Catit Flower Fountain
for my two adorable cats. The idea of a water fountain for cats may sound odd,
but having one really helps with cats staying hydrated and that alone avoids all
sorts...
Home on Erik...
The power of ensembles
From my presentation at MLConf, one of the points I think is worth stressing again is how extremely...
over a year ago
From my presentation at MLConf, one of the points I think is worth stressing again is how extremely well combining different algorithms works.
In this case, we're training machine learning algorithms on different data sets (playlists, play counts, sessions) and different...
Home on Erik...
NoDoc
We had an unconference at Spotify last Thursday and I added a semi-trolling semi-serious topic about...
over a year ago
We had an unconference at Spotify last Thursday and I added a semi-trolling semi-serious topic about abolishing documentation. Or NoDoc, as I'm going to call this movement. This was meant to be mostly a thought experiment, but I don't see it as complete madness.
Jonas Hietala
Drawing a self portrait
Drawing is hard. I’d like to improve though. Here’s a self portrait I tried to draw in Krita. I’m...
over a year ago
Drawing is hard. I’d like to improve though. Here’s a self portrait I tried to draw in Krita. I’m really slow so I stopped a bit before it really was finished.
Obviously I’d like it to be a bit better, but I’m still a little happy about the glasses and the eyebrows. The mouth...
seangoedecke.com RSS...
What kind of work I want
This article is to help recruiters, hiring managers and myself have a better idea of the kind of...
over a year ago
This article is to help recruiters, hiring managers and myself have a better idea of the kind of places I’d like to work. The short version…
Construction Physics
Why the U.S. Can’t Build Icebreaking Ships
I want to say thank you to all the people who sent condolences following last week’s post,...
2 months ago
I want to say thank you to all the people who sent condolences following last week’s post, especially those who shared their own stories of loss.
Home on Erik...
Waiting time, load factor, and queueing theory: why you need to cut your systems a bit of slack
I've been reading up on operations research lately, including queueing theory. It started out as a...
over a year ago
I've been reading up on operations research lately, including queueing theory. It started out as a way to understand the very complex mortgage process (I work at a mortgage startup) but it's turned into my little hammer and now I see nails everywhere.
Louwrentius
Storage and I/O: reads vs. writes
There is a fundamental difference between a read operation and a write operation. Storage can lie...
over a year ago
There is a fundamental difference between a read operation and a write operation. Storage can lie about completing a write operation, but it can never lie about completing a read operation. Therefore read and writes have different characteristics. This is what I've learned.
About...
Louwrentius
Thunderbolt, a cheap high-speed storage interconnect?
Intel and Apple released Thunderbolt a high-speed (10 Gigabit/s) interface, that seems to replace...
over a year ago
Intel and Apple released Thunderbolt a high-speed (10 Gigabit/s) interface, that seems to replace both USB and Firewire. It is mainly targeted at end-user systems allowing to connect peripherals with just a single cable to a computer. Thunderbolt devices, like external hard...
Notes on software...
Compiling dynamic programming languages
It can be difficult to disassociate the idea that dynamically typed
programming languages are tied...
over a year ago
It can be difficult to disassociate the idea that dynamically typed
programming languages are tied to byte-code interpreters (e.g. YARV
Ruby, CPython, V8, Zend Engine, etc.). But for many languages, a
compiled implementation also exists. Cython, Chicken Scheme and SBCL
are good...
Home on Erik...
hdfs2cass
Just open sourced hdfs2cass which is a Hadoop job (written in Java) to do efficient Cassandra...
over a year ago
Just open sourced hdfs2cass which is a Hadoop job (written in Java) to do efficient Cassandra bulkloading. The nice thing is that it queries Cassandra for its topology and uses that to partition the data so that each reducer can upload data directly to a Cassandra node.
Arduino Blog
DIY submersible pump controller helps retrieve well water
It might surprise our urban-dwelling readers, but wells are still very common in rural areas where...
6 months ago
It might surprise our urban-dwelling readers, but wells are still very common in rural areas where it is difficult or prohibitively expensive to run utilities. The CDC reports that more than 15 million households rely on groundwater and wells — and that’s just in the United...
Arduino Blog
A drone remote designed to enhance magic shows
Maker culture has always been a major part of magic performance. Some tricks are well-rehearsed...
7 months ago
Maker culture has always been a major part of magic performance. Some tricks are well-rehearsed slight of hand, but many of them rely on clever engineering to sell an illusion. And modern technology offers a great deal of interesting possibilities. That is the idea behind Peter...
Nabeel S. Qureshi
Video Games are the Future of Education
The things you learn by yourself stick; the things that are “taught” to you do not stick.
over a year ago
The things you learn by yourself stick; the things that are “taught” to you do not stick.
Notes on software...
One year as a solo dev building open-source data tools without funding
This is an external post of mine. Click
here
if you are not redirected.
over a year ago
This is an external post of mine. Click
here
if you are not redirected.
Yazin Alirhayim
The Trouble With Optionality
Optionality’s one of those things you don’t really think about. People don’t generally wake up one...
over a year ago
Optionality’s one of those things you don’t really think about. People don’t generally wake up one morning thinking “Why, it appears I’ve spent the past several decades of my life optimizing for optionality. Perhaps I should figure out why?”.
Most don’t even recognize the term –...
Good Enough
Season 1, Issue 3: Fool Me Three Times
This will be a short one. Barry’s summer vacation has started, and Shawn is deflated after the...
over a year ago
This will be a short one. Barry’s summer vacation has started, and Shawn is deflated after the Warr…iors... sob… It’s just one game, right?
1. No One Likes a Giveaway
Who doesn’t love a good pickle?
Well that didn’t happen. There were no entries to last week’s giveaway. If you...
Arduino Blog
This frighteningly realistic animatronic head features expressive silicone skin
The human face is remarkably complex, with 43 different muscles contorting the skin in all kinds of...
a week ago
The human face is remarkably complex, with 43 different muscles contorting the skin in all kinds of ways. Some of that is utilitarian — your jaw muscles are good for chewing, after all. But a lot of it seems to be the result of evolution giving us fantastic non-verbal...
Applied Cartography
Grace notes
I'm not loving Unreasonable Hospitality, but it did supply me with a phrase that I've been looking...
7 months ago
I'm not loving Unreasonable Hospitality, but it did supply me with a phrase that I've been looking for:
Eventually, that gesture became one of our steps of service. The host would ask guests, “How’d you get here tonight?” If they responded, “Oh, we drove,” he’d follow up with,...
Odds and Ends of...
I'm pro-assisted dying in principle, but I'm not sure about the proposed law
Is no law better than a bad law?
a month ago
Is no law better than a bad law?
Matt Blewitt
Long Distance Relationships
I’ve been managing a fully remote, fully distributed team, covering timezones from UTC-8 through...
2 months ago
I’ve been managing a fully remote, fully distributed team, covering timezones from UTC-8 through UTC+10, for the last couple of years. Through that time, I’ve learned a lot on organising work, interpersonal relationships, and ultimately how to overcome a lack of promximity to my...
Simply Explained
Preventing Cumulative Layout Shifts with lazy loaded images (Eleventy + markdown-it)
There's nothing more annoying than a website shifting down just as you're about to click on a button...
over a year ago
There's nothing more annoying than a website shifting down just as you're about to click on a button or link. This is called a layout shift, and Google has declared war on them. They've added layout shifts to the Core Web Vitals, and if your website has a lot of them, it will get...
Bryan Braun - Blog
Before you buy a domain name, first check to see if it’s haunted
In mid-2022 I bought a new domain name.
The name was musicbox.fun. I got it for a side-project, an...
a month ago
In mid-2022 I bought a new domain name.
The name was musicbox.fun. I got it for a side-project, an interactive online music box that I had built and hosted at musicboxfun.com. The new name was shorter and more quirky. I felt lucky to have grabbed it.
Unfortunately, musicbox.fun...
Vitalik Buterin's...
STARKs, Part II: Thank Goodness It's FRI-day
over a year ago
Louwrentius
Buying a new computer
*** Desktop or Laptop ***
When deciding on which computer to buy, the first decision you have to...
over a year ago
*** Desktop or Laptop ***
When deciding on which computer to buy, the first decision you have to make is about whether to go for a desktop or a laptop. There was a time that many believed that the desktop would become a niche product. Most people want a laptop because they can...
Push to Prod
Metrics Are The Map, Not The Territory
We can never obtain a complete and perfect understanding of what our systems are doing. All we have...
4 months ago
We can never obtain a complete and perfect understanding of what our systems are doing. All we have are incomplete signals to inform our theories.
Jonas Hietala
Focusing Attention: Programming
These last two weeks have been a small attempt at clearing up my head a bit. I have far too many...
over a year ago
These last two weeks have been a small attempt at clearing up my head a bit. I have far too many things I’d like to do and even if it’s not possible to do them all at once it didn’t stop me from thinking of them. One minute it’s that and the other it’s something completely...
./techtipsy
Dell Latitude 5411: the Linux compatibility sweet spot
Oh boy, here I go testing a new laptop again!
Well, it was new back in 2020.
You might remember my...
a year ago
Oh boy, here I go testing a new laptop again!
Well, it was new back in 2020.
You might remember my article on why I went back to a ThinkPad T430 in 2022.
Or that other time when I got a new HP laptop for testing and got so frustrated that I wrote about it.
Well, today I’m writing...
Good Enough
The Element of Surprise
Good Enough happens to be a remote team. This isn't from some strongly-held belief that remote is...
a year ago
Good Enough happens to be a remote team. This isn't from some strongly-held belief that remote is best, but rather as a side effect of how we all happened to meet each other. We met remotely, we did not end up all moving into some commune, and so to work together we must work...
Opsbros
The past lives again!
I found a GameBoy Camera for my GBC and thought it'd be a good idea to extract the photos from eons...
over a year ago
I found a GameBoy Camera for my GBC and thought it'd be a good idea to extract the photos from eons ago and bring them to the era of the internet.
latest projects -...
Portable Probability Panel
[Misc] Laser-cut Galton board
5 months ago
[Misc] Laser-cut Galton board
Willem's Blog
The day I killed my LAN
I killed my office LAN and went 4G only. Saves a lot of clutter, energy and money.
over a year ago
I killed my office LAN and went 4G only. Saves a lot of clutter, energy and money.
Notes on software...
Building a fast SCSS-like rule expander for CSS using fuzzy parsing
This is an external post of mine. Click
here
if you are not redirected.
over a year ago
This is an external post of mine. Click
here
if you are not redirected.
computers are bad
2024-08-12 a pedantic review of the las vegas loop
Did you hear that Elon Musk dug a tunnel under the Las Vegas Convention
Center?
I think it is pretty...
4 months ago
Did you hear that Elon Musk dug a tunnel under the Las Vegas Convention
Center?
I think it is pretty universally known by now that the "Las Vegas Loop" is
impractical, poorly thought out, and generally an embarrassment to society and
industry. I will spare an accounting of the...
Jonas Hietala
Minecraft Server Hosting
I play the phenomena that is Minecraft on and off. Sometimes the laid back building or the exploring...
over a year ago
I play the phenomena that is Minecraft on and off. Sometimes the laid back building or the exploring is just what I need. Sometimes I can challange myself to build cool complex stuff and I’m even an avid follower of Doc’M and Etho and the other mindcrackers over at the youtube....
On Life and Lisp
AAA gaming on Asahi Linux
Gaming on Linux on M1 is here! We’re thrilled to release our Asahi
game playing toolkit, which...
2 months ago
Gaming on Linux on M1 is here! We’re thrilled to release our Asahi
game playing toolkit, which integrates our Vulkan 1.3 drivers with x86
emulation and Windows compatibility. Plus a bonus: conformant OpenCL
3.0.
Asahi Linux now ships the only conformant OpenGL®,
OpenCL™,
and...
Style over Substance
Fujifilm Instax Wide 300 to Mamiya Press mount mod
How I modified an Instax Wide instant camera to mount a Mamiya Press medium format lens
The post...
over a year ago
How I modified an Instax Wide instant camera to mount a Mamiya Press medium format lens
The post Fujifilm Instax Wide 300 to Mamiya Press mount mod appeared first on Style over Substance.
Willem's Blog
The birth of a child
Witnessing the birth of a child changes a man, for science and curiosity I wore a biometric sensor...
over a year ago
Witnessing the birth of a child changes a man, for science and curiosity I wore a biometric sensor capturing the impact of birth on yours truly.
Posts on Made of...
Lab Notebooking for the Software Engineer
A few weeks ago, I wrote that software engineers should keep lab notebooks as they work, in addition...
over a year ago
A few weeks ago, I wrote that software engineers should keep lab notebooks as they work, in addition to just documenting things after the fact. Today, I’m going to share the techniques that I’ve found useful to try to get in the habit of lab-notebooking my work, even though I...
Old Vintage...
CAP-X and COMP-X: how the Tandy Pocket Computers got a sucky Japanese assembler
I grew up primarily with the Commodore 64, where if you wanted to do anything really cool and...
10 months ago
I grew up primarily with the Commodore 64, where if you wanted to do anything really cool and useful, you had to do it in 6502 assembly language. Today I still write 6502 assembly, plus some Power ISA and even a little TMS9900. I like assembly languages and how in control of the...
Notes on software...
Writing a lisp compiler from scratch in JavaScript: 2. user-defined functions and variables
Previously in compiler basics:
1. lisp to assembly
3. LLVM
4. LLVM conditionals and...
over a year ago
Previously in compiler basics:
1. lisp to assembly
3. LLVM
4. LLVM conditionals and compiling fibonacci
5. LLVM system calls
6. an x86 upgrade
In this post we'll extend the compiler to support defining functions
and variables. Additionally, we'll require the...
Louwrentius
'Linux RAID level and chunk size: the benchmarks'
Introduction
When configuring a Linux RAID array, the chunk size needs to get chosen. But
what is...
over a year ago
Introduction
When configuring a Linux RAID array, the chunk size needs to get chosen. But
what is the chunk size?
When you write data to a RAID array that implements striping (level 0, 5, 6,
10 and so on), the chunk of data sent to the array is broken down in to
pieces, each part...
Louwrentius
Is storage really that cheap?
Nowadays you can buy a 1 TB harddrive for less than 100 euro's . So I build
myself a 4 TB NAS box,...
over a year ago
Nowadays you can buy a 1 TB harddrive for less than 100 euro's . So I build
myself a 4 TB NAS box, which is already 50% full. However, although it is to
some degree fault-tollerant by using RAID 6, one mistake or catastrophic
hardware faillure and all data is lost.
And that's...
Arduino Blog
Easily build an energy meter with the Arduino Nano Matter
The primary appeal of microcontrollers is their versatility. They are, essentially, the embedded...
2 months ago
The primary appeal of microcontrollers is their versatility. They are, essentially, the embedded equivalent of computers — general purpose devices that can perform a wide range of functions. And to get the most out of a microcontroller, you’ll also want connectivity suitable for...
Home on Erik...
The mathematical principles of management
I've read about 100 management books by now but if there's something that always bothered me it's...
over a year ago
I've read about 100 management books by now but if there's something that always bothered me it's the lack of first principles thinking. Basically it's a ton of heuristics. And heuristics are great, but when you present heuristics as true objectives, it kind of clouds the...
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