Recent Projects

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

XRX - eXperimental Research X

marcellus-pereira Marcellus Pereira

An ECG recorder built from discrete components, with FPGA-based digital filtering and Pan–Tompkins R-wave detection.

DIY ECG With Discrete Analog Front End

A minimalist Wi-Fi desk clock that automatically synchronizes time over the internet, helping you stay focused with a clean, distraction-fre

Nexus — a Tiny IoT Desk Clock

next-builder Next Builder

A modular, repairable remote station for amateur radio — open hardware, built almost entirely AI-assisted.

OE5XRX — Open-Source Modular Remote Ham Station

peter-buchegger Peter Buchegger

OCRd and typeset as html where possible. A work in progress.

Applix 1616 Documentation

Let's add a beautiful LED RGB Matrix to my Towers of Hanoi program for the 1983 Kosmos CP1 educational computer!

Towers of Hanoi meet the Kosmos CP1 in the Matrix

michael-wessel Michael Wessel

R909-Tester is a low-cost workshop instrument platform based on the Raspberry Pi RP2040 zero

R909-Tester: A Modular RP2040 zero Instrument

"The display becomes a terminal. The computing happens elsewhere."

Hardware-Accelerated Display Streaming Decoder

Building a mechanical television with parts only from the 1920s. Focusing on simplicity.

Mechanical Television - 1920s parts

paul-kocyla Paul Kocyla

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

Z80 + RP2350B ZX-compatible homebrew retrocomputer

Home_LAB

rhea-rae Rhea Rae

Arduino + Franklin oscillator

Turning Impedance into Frequency: An LC Experiment

It uses free API key with Live ADS-B data, presented in a beautiful visual display with smooth animation, and a custom-built radar interface

Air Traffic Radar using ESP32 + ADS-B Data

mircemk mircemk

immurok is a small wireless fingerprint authentication device for Mac and Linux desktops

immurok - a wireless fingerprint auth key

Wearable BLE-MIDI gestural instrument: 12-notes, 20 scales, aftertouch, flex glissando, X/Y accelerometer, LED display, patch save/load

SNEAKY GESTURES V2

michel-morin Michel Morin

I build a model railway controller using analog PWM & block detection with manual and automatic control, and I evaluated the passing siding.

Model Railway Controller using Analog PWM

mitsuru-yamada Mitsuru Yamada