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Marian's Blog

Marian's Blog
Lego Part Designer I made a web app that lets you design your own Lego Technic parts and save them as printable STL...
over a year ago
27
over a year ago
I made a web app that lets you design your own Lego Technic parts and save them as printable STL files. You can check it out here. I got the idea for this project when I was building with Lego parts and wondered how many of the common parts can be described with a simple rule...
Marian's Blog
Generating an infinite world with the Wave Function Collapse algorithm This article describes how I generate an infinite city using the Wave Function Collapse algorithm in...
a year ago
21
a year ago
This article describes how I generate an infinite city using the Wave Function Collapse algorithm in a way that is fast, deterministic, parallelizable and reliable. It's a follow-up to my 2019 article on adapting the WFC algorithm to generate an infinite world. The new approach...
Marian's Blog
LED Matrix Materials Guide I built an LED matrix out of 256 WS2812 LEDs. This post will describe which materials I used and...
over a year ago
15
over a year ago
I built an LED matrix out of 256 WS2812 LEDs. This post will describe which materials I used and which I tried with no success so you don’t have to. Case For the case, I used a custom made photo frame. The main purpose of the case is to look good, which is...
Marian's Blog
Adversarial Generation of Continuous Implicit Shape Representations This article provides an overview of the paper "Adversarial Generation of Continuous Implicit Shape...
over a year ago
14
over a year ago
This article provides an overview of the paper "Adversarial Generation of Continuous Implicit Shape Representations", which I co-authored with Matthias Fey. While the paper focuses on the theoretical aspects, I'll provide a higher level explanation and and some visualizations...
Marian's Blog
Designing a Lego orrery I've always been a fan of the Lego Technic series, especially those models that have gears and...
9 months ago
13
9 months ago
I've always been a fan of the Lego Technic series, especially those models that have gears and cranks and moving parts. But it seems that Lego is shifting the focus of the Technic series away from functional models, so I had to take matters into my own hands. I think an orrery is...
Marian's Blog
How to build a Lego Portal Gun Resources: Parts: list, Rebrickable CSV, Bricklink XML Model: LDR, 3DS Build this MOC on...
over a year ago
12
over a year ago
Resources: Parts: list, Rebrickable CSV, Bricklink XML Model: LDR, 3DS Build this MOC on Rebrickable Instructions: ...
Marian's Blog
What I learned from building autonomous model race cars for a year I was part of a university project group that develops autonomous model race cars. We are a group of...
over a year ago
12
over a year ago
I was part of a university project group that develops autonomous model race cars. We are a group of twelve students working on the project in part time for year. We were provided with a car that meets the requirements for the F1/10th competition. Even though competing in F1/10th...
Marian's Blog
BTduino documentation The BTduino app sends data using the serial interface of a microcontroller and a bluetooth...
over a year ago
12
over a year ago
The BTduino app sends data using the serial interface of a microcontroller and a bluetooth connection. The concept of the protocol is to send all data in text form. Each set of data consists of the name and the value, seperated by a colon. This way of communication is not the...
Marian's Blog
ESA ExoMars Rover 3D model This is one of my first 3D modeling projects in Blender and my biggest 3D modeling project so...
over a year ago
11
over a year ago
This is one of my first 3D modeling projects in Blender and my biggest 3D modeling project so far. It's a model of ESA's ExoMars rover. You can have a closer look at the model on Sketchfab: There is also a download option on Sketchfab so you can get the original .blend file and...
Marian's Blog
3D printed model of my neighborhood I 3D printed a model of the street where I live. This post will explain how I prepared the data for...
over a year ago
11
over a year ago
I 3D printed a model of the street where I live. This post will explain how I prepared the data for it. Update: I have now automated the entire process and published my code. You can find it here. I worked with aerial Lidar data that is provided by the state I live in to download...
Marian's Blog
Raspberry Pi powered fishtank My fishtank is now internet-connected. It is run by a Raspberry Pi that can do three things: Feed...
over a year ago
11
over a year ago
My fishtank is now internet-connected. It is run by a Raspberry Pi that can do three things: Feed the fish, switch the lights and take pictures. To feed the fish, the Raspberry Pi sends commands to an automatic fishfeeder that I modified. It can empty any container in any order....
Marian's Blog
Visualizing 150000 butterflies from the Natural History Museum Click here for the interactive visualization. The Natural History Museum in London has a data portal...
over a year ago
11
over a year ago
Click here for the interactive visualization. The Natural History Museum in London has a data portal in which they provide digital records for many of their specimens. Some of these records have images. I recently learned how to use machine learning tools such as convolutional...
Marian's Blog
Quadrocopter Ich habe mir dieses Jahr den Traum erfüllt, einen selbst zusammengestellten Quadrocopter zu...
over a year ago
11
over a year ago
Ich habe mir dieses Jahr den Traum erfüllt, einen selbst zusammengestellten Quadrocopter zu bauen. Investitionen Für mich ist dieses Projekt bisher immer an zu hohen Kosten und mangelnden Informationen für Einsteiger gescheitert. Diese Probleme wurden zum Teil ausgeräumt durch...
Marian's Blog
Procedural pixelart generator I made a procedural pixelart generator that is inspired by the art style of the upcoming space...
over a year ago
11
over a year ago
I made a procedural pixelart generator that is inspired by the art style of the upcoming space adventure game No Man’s Sky. Check it out and generate your own pixelart: https://marian42.github.io/proceduralart/ The art generator is written in javascript and uses noise functions...
Marian's Blog
Computer Vision and Robotics Demo with Raspberry Pi This spring, I spent some time at SAP’s commercial hackerspace. I wanted to explore how computer...
over a year ago
11
over a year ago
This spring, I spent some time at SAP’s commercial hackerspace. I wanted to explore how computer vision can be used with embedded devices and robotics. I built a demo that can detect QR codes and similar symbols and point a laser at them. Possible applications of this are putting...
Marian's Blog
How to add Bluetooth to your Arduino Project with BTduino This tutorial will show you how to connect your Arduino project to an Android device using the...
over a year ago
10
over a year ago
This tutorial will show you how to connect your Arduino project to an Android device using the BTduino app. You don’t need an extra Arduino library and you don’t need to code anything on the Android side. Here is what you need: an Android device running Android 4.0 or higher that...
Marian's Blog
Game prototypes I’d like to share two game prototypes I made a few years ago. The first one is based on Tetris: ...
over a year ago
10
over a year ago
I’d like to share two game prototypes I made a few years ago. The first one is based on Tetris: It was written in C++ with bare-bones OpenGL. Once you press shift, the game enters a “fast mode”, where the down button takes a piece all the way down and if you...
Marian's Blog
Agent V – Global Game Jam 2018 Project This year I participated in my first game jam, the Global Game Jam 2018. With a team of artists,...
over a year ago
10
over a year ago
This year I participated in my first game jam, the Global Game Jam 2018. With a team of artists, programmers and a sound designer, we made a video game within 48 hours. You play the game as a virus that infiltrates a company’s headquarters. The virus can not move on its own, it...
Marian's Blog
Infinite procedurally generated city with the Wave Function Collapse algorithm This is a game where you walk through an infinite city that is procedurally generated as you...
over a year ago
10
over a year ago
This is a game where you walk through an infinite city that is procedurally generated as you walk. It is generated from a set of blocks with the Wave Function Collapse algorithm. You can download a playable build of the game on itch.io and you can get the source code on...
Marian's Blog
16×16 LED Matrix This is a 16×16 RGB LED matrix, made of 256 WS2812B LEDs. It’s powered by a Raspberry Pi and can...
over a year ago
10
over a year ago
This is a 16×16 RGB LED matrix, made of 256 WS2812B LEDs. It’s powered by a Raspberry Pi and can display images and animations. With a game controller attached, it can play games. The pictures below show how I built the frame. Painting the base plate Drawing...
Marian's Blog
Uni-Timer Ich bin seit diesem Semester Student und in der Uni dauern Vorlesungen immer 90 Minuten, von...
over a year ago
10
over a year ago
Ich bin seit diesem Semester Student und in der Uni dauern Vorlesungen immer 90 Minuten, von “viertel nach” bis “viertel vor”. Da kam mir die Idee, dass man eine Uhr bräuchte, die nicht den Fortschritt der aktuellen Stunde, sondern den der aktuellen Vorlesung zeigt. Dazu habe ich...
Marian's Blog
No Man’s Starfield This is a shader I made that renders a flight through a starfield. It’s meant to look like the...
over a year ago
10
over a year ago
This is a shader I made that renders a flight through a starfield. It’s meant to look like the galactic map that you can see in No Man’s Sky. Here is a link to the project on shadertoy: No Man’s Starfield The cool thing about this is that it runs inside a shader. A shader is a...
Marian's Blog
LED Matrix Software I wrote two programs that run on my LED matrix. They have different approaches and different...
over a year ago
9
over a year ago
I wrote two programs that run on my LED matrix. They have different approaches and different aims. This post describes one of them.  The app offers a web interface where users can write simple programs that are then compiled and started instantly from the website. The concept is...
Marian's Blog
Arduino-Wetterstation mit Bluetooth, Datalogging und Android-App Die Wetterdaten für die Wetterstation werden von einem Board gesammelt, das ich für einen...
over a year ago
9
over a year ago
Die Wetterdaten für die Wetterstation werden von einem Board gesammelt, das ich für einen Schülerwettbewerb (ILC) bekommen und zusammengesetzt habe. Auf dem Board rechnet ein ATxmega128A3U. Temperatur, Luftfeuchte, Luftdruck, Helligkeit, Regenmenge und Windgeschwindigkeit werden...
Marian's Blog
Raspberry Pi Wetterstation Um die Daten, die meine Arduino-Wetterstation liefert, verfügbarer zu machen, habe ich mich...
over a year ago
9
over a year ago
Um die Daten, die meine Arduino-Wetterstation liefert, verfügbarer zu machen, habe ich mich entschieden, das Projekt jetzt mit einem Raspberry Pi weiterzuführen. Die Sensordaten werden wieder vom ILC-Board geliefert, das ich für den Schülerwettbewerb Intel Leibniz Challenge...
Marian's Blog
Quadcopter Lightpainting Die Fotos wurden mit einem beleuchteten Quadrocopter, einem Stativ und 15 Sekunden Belichtung...
over a year ago
9
over a year ago
Die Fotos wurden mit einem beleuchteten Quadrocopter, einem Stativ und 15 Sekunden Belichtung aufgenommen. Bei diesen Fotos stimmte die Einstellung noch nicht, sodass sie zu dunkel sind: ...
Marian's Blog
BTduino BTduino is an Android app that lets you add a custom bluetooth interface to your Arduino project...
over a year ago
9
over a year ago
BTduino is an Android app that lets you add a custom bluetooth interface to your Arduino project without any programming on the Android side. Everything is better with bluetooth! Here are some examples: Download Android APK file Android 4.0 or higher is...
Marian's Blog
Connecting my fish tank to the Internet of Things – Part 1: Hacking an automatic fish feeder I bought a used automatic fish feeder from ebay. This device is completely mechanic and very old...
over a year ago
9
over a year ago
I bought a used automatic fish feeder from ebay. This device is completely mechanic and very old (older than 1989). It has 27 containers for fish food and a disc that does one rotation per day. By sticking pins into that disc one can trigger one or more feedings per day. A pin...
Marian's Blog
Work in progress: Location based online game This is a game prototype I’m currently working on. The game is played online, on a real world map...
over a year ago
9
over a year ago
This is a game prototype I’m currently working on. The game is played online, on a real world map and the location of the player is also the location ingame, just like in Ingress. I know that making an online game like this is an ambitious goal and it will probably never be...
Marian's Blog
Faster Than Life – Global Game Jam 2019 Project Like in the previous year, I took part in the Global Game Jam. I joined a team of six programmers,...
over a year ago
9
over a year ago
Like in the previous year, I took part in the Global Game Jam. I joined a team of six programmers, unfortunately there was a shortage of artists this year. During the 48 hour jam, we made a space game that is inspired by Faster Than Light. You travel through...
Marian's Blog
Android-Benachrichtigungen auf dem Schreibtisch Das Ziel dieses Projekts ist, Benachrichtigungen von meinem Android-Handy automatisch auf einem...
over a year ago
8
over a year ago
Das Ziel dieses Projekts ist, Benachrichtigungen von meinem Android-Handy automatisch auf einem LoL-Shield (Lots of LEDs) anzuzeigen. Dazu benutze ich einen Raspberry Pi, der sowieso schon auf meinem Schreibtisch steht, einen Arduino für das Schild und auf dem Handy Tasker, um...
Marian's Blog
Quadrocopter Lichtsystem Dies ist ein Arduinoprojekt, das vier RGB-LED-Streifen an den vier Armen des Quadrocopters...
over a year ago
8
over a year ago
Dies ist ein Arduinoprojekt, das vier RGB-LED-Streifen an den vier Armen des Quadrocopters ansteuert. Das Ziel war, bei möglichst geringen Materialkosten möglichst viele Möglichkeiten bei der Beleuchtung des Quadrocopters zu haben. Verwendete Teile: 1m RGB-LED Streifen, jeweils...
Marian's Blog
Raspberry Pi Projekte Was macht man eigentlich mit einem Raspberry Pi? Ich habe mir vor einem halben Jahr einen gekauft....
over a year ago
8
over a year ago
Was macht man eigentlich mit einem Raspberry Pi? Ich habe mir vor einem halben Jahr einen gekauft. Seitdem steht er hier auf meinem Schreibtisch und führt eine Reihe von Aufgaben aus. Hier eine Übersicht: http-Server für einige Webseiten auf dem Pi und die Daten auf meiner...
Marian's Blog
Generating 3D roof meshes from aerial LIDAR data This is my graduation project I did in computer science. The goal was to come up with a method to...
over a year ago
7
over a year ago
This is my graduation project I did in computer science. The goal was to come up with a method to generate 3D meshes of building roofs from point cloud data. The point cloud data was taken with aerial LIDAR scanners and is available online. In addition, I used building layout...
Marian's Blog
Aquarium Innensicht mit Gopro Wegen meinem Quadrocopter habe ich eine Gopro, die ja auch wasserfest ist. Da war es naheliegend,...
over a year ago
7
over a year ago
Wegen meinem Quadrocopter habe ich eine Gopro, die ja auch wasserfest ist. Da war es naheliegend, die mal im Aquarium auszuprobieren. Bei dem Aquarium stand einiges an Arbeit an, da das Glasbecken undicht war, und alles komplett ausgeräumt werden muss, um das Becken...