Recent Projects

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

XRX - eXperimental Research X

marcellus-pereira Marcellus Pereira

Playing NTSC composite video on a TV using Sony Spresense's 192kHz 24bit HiRes Audio DAC — no code changes, just a WAV file.

Spresense Audio Jack as NTSC Video Output

Open-source meter-scale concrete 3D printer. CadQuery with self-verifying assembly harness.

M3-CRETE

Projects which are using ESP32 microcontroller

How to use ESP32 in your Projects?

Is a mechanical piano the best place to hang my keys? I think the answer is yes!

A Wooden Piano That Holds My Keys

inventive-robin Inventive Robin

How I Lost 20 dB and Didn't Notice

The PCB Inductor Trap:

Mini-PI Media Server for use on home network or as a wifi access point to stream media from

Mini-PI Media Server

PiTime is a compact, LED-based mathematical clock that blends electronics and design to transform time into a problem-solving experience.

PiTime — a Mathematical LED Clock

next-builder Next Builder

Air Sense is a smart IoT air purifier that monitors indoor air quality in real time and automatically removes harmful pollutants

AirSense - the Smartest DIY Air Purifier

next-builder Next Builder

A smart, low-cost, 1000W, 80V, 50A programmable electronic load powered by an ESP32-C6, featuring a web-app UI and novel thermal management.

Smart 1000W electronic load without a heatsink!

oliver-ridler Oliver Ridler

A USB-C PD Sink up to 140 W, 28 V, 5 A based on the Diodes Inc. AP33771C USB PD Controller

USB-C PD 3.1 EPR Power Delivery Sink - AP33771C

A USB-C PD Sink up to 20V 5A based on the Cypress CYPD3177 USB PD Controller

USB-C Power Delivery Sink - CYPD3177

3D printed running aid

3D printed truck

lion-mclionhead lion mclionhead

After 7 years, the project is still very much alive!

WEEDINATOR 2026 Agricultural Robot

goat-industries GOAT INDUSTRIES

Built the tricorder I actually wanted in the field: one that warns, not just measures.

ATLAS

apollo-timbers Apollo Timbers

This project turns a static speaker into a rugged, battery-powered garden radio.

Bose Sountouch 10 - Drill Battery Mod