Recent Projects

Created in 1972, the Model 832 was designed as part of a training program to teach both digital electronics and computer operations.

NRI Model 832 Digital Computer Recreation

michael-gardi Michael Gardi

A custom 8-bit microprocessor for education/fun, with front-panel controls and an LCD display for simple analysis of system state

Bare Metal Microprocessor Board

An ESP32-powered desk gadget with six round displays that appears to spin without any visible axle — the trick is mounting the frame on the

YUMO Roulette — A "Floating" Spinning Desk Gadget

yumobuilds YUMO.BUILDS

Tiny ESP32-C3 desk gadget with OLED, live weather sensing, proximity glow & a phone-controlled web interface.

YUMO PULSE — ESP32-C3 Desk Gadget

yumobuilds YUMO.BUILDS

A hand-bent 1.5mm brass wire clock sculpture powered by ESP32-C3 with NTP time sync, hardware-multiplexed 7-segment display, and 5-stage SK

YUMO GLOBE

yumobuilds YUMO.BUILDS

A freeform brass wire sculpture featuring a round capacitive touch screen, 6-axis IMU auto-rotation, and reactive led filaments.

YUMO SMART CUBE: Touch screen/ESP32-S3 Brass Wire

yumobuilds YUMO.BUILDS

Free, web based, industrial robot simulator with plugin system that enable users to add custom functions, post processors for real robots.

BabaCAD Robotics online simulator

mirza-coralic Mirza Coralic

This project is an open-source environmental monitoring station designed around an ESP32 microcontroller.

Open-Source Environmental Monitoring Station with

emilyjacksongb emilyjackson.gb

ZX Spectrum-compatible homemade retrocomputer based on Z80 CPU + discrete RAM and ROM + Raspberry RP2350B as ULA/chipset

Z80 + RP2350B ZX-compatible homebrew retrocomputer

An isolated firmware debugging probe

Grapple Probe

jonathan-herbst Jonathan Herbst

Autonomous ambient energy accumulation capable of powering brief data bursts from simple electronics.

AEFC - Ambient Energy Field Converter

rhea-rae Rhea Rae

Home_LAB

rhea-rae Rhea Rae

Replacing the original CPU of a 1980s ADRET 740A RF signal generator with an Arduino Mega while preserving its original hardware.

Reviving a 1980s ADRET 740A with an Arduino CPU

pascal.amesland

Open-source mission data contracts for small spacecraft: telemetry, commands, payload data, storage intent and downlink assumptions.

OrbitFabric

fabrizio-rovelli Fabrizio Rovelli

A tiny ESP32-S3 desktop gremlin made from brass and PCB, with OLED eyes, motors, sensors, audio, and an AI-connected personality layer.

TongDou

solitary-dev solitary dev

These amplifiers prove that a well-designed and carefully built analog circuit can survive decades of hard use and still perform reliably.

40-Year-Old DIY Power Amplifiers – Still Work?

mircemk mircemk