Recent Projects

Open hardware+firmware portable dual-purpose tribometer and penetrometer. Slip index = tan of hinge angle, to 0.01. Not ASTM/ANSI certified.

OpenSlip: open tribometer and penetrometer

michael-vredenburgh Michael Vredenburgh

Another homebrew computer based on the MSX standard. But it uses a Z380 microprocessor.

XRX - eXperimental Research X

marcellus-pereira Marcellus Pereira

Aim of the project is to analyse how the grinder in question works, to recreate its standard functions, and to add some of my own

Fellow Opus, 2023 - reverse engineering attempt

The first truly personal device for kids — designed to grow with them from drawing sprites to writing C++

RCKid

Home_LAB

rhea-rae Rhea Rae

Teacher taps iPhone to start/end class; students tap RFID cards to check in — REYAX RYRR30D logs it all live to Google Sheets.

Tap-In Attendance: Apple Wallet & RFID Classroom

rohan-barnwal Rohan Barnwal

Puzzling a Multitech Microprofessor board together with just some photo's and a ROM dump.

SGB-MPF-I Sound generation board reconstruction

fjkraan fjkraan

Modern replacement board to provide power and video to the NES.

Link to video

Breathing life into a half a century old RCA COSMAC Micromonitor emulator of CDP1802 microprocessor

CDP18S030: A Microcomputer in a Briefcase

lauri-pirttiaho Lauri Pirttiaho

68020 processor board renovation

STEbus 68020

A drag-and-drop CAD package that is an open source, local application alternative to TinkerCAD

CaDoodle: Doodle in CAD!

kevin-harrington Kevin Harrington

Another gimmicky EE businesscard. But engineered to be actually (sort of) practical.

NFC powered synth businesscard

A compact head amp for MC cartridges, ahead of our tiny MM phono preamp. Simple discrete circuit on a single Li-Po cell, no boost converter

Low Noise Battery Head Amp for MC cartridges

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