I’ve purchased two AirGradient ONE indoor quality monitors to measure air quality in my home. AirGradient devices are open-source, so you can flash your own custom firmware and collect your air data locally rather than sending it to AirGradient’s proprietary cloud dashboard. I keep an AirGradient ONE air quality monitor in my office to measure CO2 and pollution. The existing documentation for flashing firmware requires you to use the Arduino IDE, a clunky GUI program:

New here? Hi, I’m Michael. I’m a software developer and founder of small, indie tech businesses. I’m currently working on a book called Refactoring English: Effective Writing for Software Developers. Every month, I publish a retrospective like this one to share how things are going with my book and my professional life overall. Highlights I find that not every reader who purchases early access to my book wants to give me feedback about rough drafts. I figure out where all my time is going and think of ways to minimize time drains. I spend 10 hours reimplementing a web app from scratch that originally took me 300 hours to build. I continue to learn functional programming with Gleam, but I might be cheating. Goal grades At the start of each month, I declare what I’d like to accomplish. Here’s how I did against those goals:

p img { display: block; margin-left: auto; margin-right: auto; } I recently upgraded my home TrueNAS server and migrated 18 TB of data from a 4-disk RAIDZ1 ZFS pool to a new RAIDZ2 pool. The neat part is that I did it with only three additional 8 TB disks and never transferred my data to external storage. Upgrading from RAIDZ1 to RAIDZ2 without moving data to external storage is tricky because:

Highlights I look for ways to limit the number of half-complete tasks I’m juggling. I brainstorm ways to talk with more of my early readers. I have trouble accepting a design decision in the Gleam language. Goal grades At the start of each month, I declare what I’d like to accomplish. Here’s how I did against those goals: Offer a lower-friction way for users to pre-order my book Result: Switched from Kickstarter pre-orders to Stripe payment links. Grade: A I ran the initial pre-sale through Kickstarter, so I decided to just stick with it for subsequent pre-orders. After a couple of months, I realized Kickstarter requires customers to create an account to buy the book, which adds a lot of friction and discourages people from buying.