Recent Projects

In this project, we’ll interface SSD1306-based OLED displays with an Arduino Nano and explore both I2C and SPI versions.

Interfacing an SSD1306 OLED Display with Arduino

akshay-jain Akshay Jain

Building a Pen Plotter with automatic toolchanger with components from an old RepRap style 3D Printer. Runs on Klipper.

Limn: Pen Plotter with Toolchanger

prashant-sinha Prashant Sinha

I designed and built a simple analog temperature controller for AC heating devices.

DIY Temperature Controller Using KYT84 and TRIAC

A terminal UI tool that adds tiered Wayfire compositor eye-candy — blur, glass, wobbly windows — just like Compiz but new

Wayfire pi - make Pi OS look sexy

This project is a practical guide to getting started with the Heltec WiFi LoRa 32 V4, an ESP32-S3-based development board.

Getting Started with the Heltec WiFi LoRa 32 V4

akshay-jain Akshay Jain

luks-hwid derives a LUKS unlock key from what your machine is made of: RAM serials, CPUID, board serial.

No TPM? Your Hardware Is Already The Key

rmingon rmingon

Freeing my Joy vinyl cutter from the shackles of corporate spyware with Rust (and the power of friendship)

Liberating my Joy

A tiny, fully open-source FOC ESC built around a single chip.

Cogless: A Field-Oriented ESC From a Single Chip

rmingon rmingon

16-channel analog marine gateway. Connects legacy VDO sensors to MQTT & Signal K. No sensor replacement needed. Open source.

BoatOpenIO — Open Source Analog Marine Gateway

compact, energy-efficient, battery-powered system for ePaper-based display of information gathered via Wi-Fi

Tinta - low power wireless epaper device

Pi-Ener-lite is a dedicated UPS power supply designed for the Raspberry Pi Zero

Pi-Ener-lite

A 3D-printed string instrument whose sound box is a party balloon. Inflate more or less to change the resonance. No tools, no glue.

Balloon Banjo: A Tunable Resonator You Inflate

cocreation-lab Co:Creation Lab

Documenting all the mods I'm building for my Golf R

Car Mods

poorna-k Poorna K

A (steel) pipe climbing robot to improve Meshtastic radio reception in an apartment block

Meshbot: pipe-climbing robot

robert-wallhead Robert Wallhead

Almost everyone has seen images/videos of Theo Jansen's walking machine, the "Strandbeesten". Here I want to look at a simplified version.

Walking Machine

agpcooper agp.cooper

A small inline SAO with an RP2040 used to demo SAOs that require smarts, but do not have it built-in.

SAO DEMO Controller V2

andy-geppert Andy Geppert