Recent Projects

Software Defined Radio Firmware on Zephyr OS

zSDR

Documenting my path learning embedded systems from scratch including ESP32, Arduino, sensors, and everything in between.

esp32 Hardware Journey

niam-savaliya Niam Savaliya

Wanted to build a rolling ball robot that was like the pop from Arc Raiders. This is my journey into making a prototype.

Rolling Ball Robot

LUA before Lua: a self-hosting compiler on the Apple //e

Lua2e

jorj-bauer Jorj Bauer

Text on a small display should come alive. It started with clock digits made of Bézier curves; this is where the idea went.

Bringing Text to Life on an ESP32

anton-petrusevich Anton Petrusevich

A hot analog interface in the age of digital coldness.

Low-hi tech incandescent monitor

Built around just two readily available boards, it can tune several distinct 0-64MHz channels and decode FT8, WSPR and other digital modes.

0-64MHz MultiChannel RX with Two Commercial Boards

guido-iw5alz Guido - IW5ALZ

A pocket-sized digital reel-to-reel with exquisite tape-like control of sound over time

Tweacman: a pocket sample scrubber

A wall plotter built on an old drawing board: belts and counterweights in pipes, self-homing, SD-card standalone.

Sash: A Standalone A2 Polargraph Drawing Machine

robert-salmon Robert Salmon

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

Where I apply lessons learned to make a monitor for a 1970s era personal computer.

A Better Small CRT Like Monitor For Retro Projects

michael-gardi Michael Gardi

When life gives you a broken Apple card, make ... it work again?

ProFile Apple ][ card repair

jorj-bauer Jorj Bauer

Enjoy short circuit protection for both +3.3V and +5V. Power it using USB-C or with a 9-volt battery. Now has Logic Probe support.

Super Breadboard 2: a breadboard on steroids

A miniature 386-era tower decoration with a 33 MHz display, blinking drive LED, and simulated PC boot sounds.

RetroTower: A Miniature 386-Era PC with Boot Sounds

michael-yim Michael Yim

Systematically quantifying sleep behavior by capturing and analyzing how body weight is distributed across a sleeping surface over time.

Quantifying Sleep Positions With Body Weight

bret-bernhoft Bret Bernhoft

ATARI ST replica

ATAPI