Programmable Voltage Reference

Raspberry pico based MIDI-USB Interface

Use 2 Seeed XIAO SAMD21 boards to create a USB MIDI Host to Host adapter

Midibrunch is a MIDI to CV module designed as standalone or module in 4U LW format

A design for a Eurorack mixer using one op-amp.

Arduino nano sample based 8-channel drum module

Black Magic Probe firmware for STM32

A THT-only Raspberry Pi expansion board containing a MIDI interface, DAC, and OLED display

Some small programs for the Raspberry Pi Pico

3.3V MIDI in/out/thru serial interface

Raspberry Pi Pico Arduino core, for all RP2040 and RP2350 boards

Various Eurorack Modules

Improvements to the DAC code for the Braids Through-hole – SoundForce module

Compact headphone output module based on the LM4808

+/-12V +/-1A Low Noise EuroRack Power Supply

LEET is a modular & affordable ($6) MIDI synth for your favorite DAW.

LEET modular is a versatile, easy to build, affordable and powerful generic eurorack module.

6HP Euroack power supply

12-bit through-hole adaptation of Mutable Instruments Peaks

a small patchable synthesizer

A simple +12 -12 power supply for Eurorack using 12VAC adapters

eurorack modular synthesizers projects using Arduino.

USB to DIN midi converter/filter/router, sound generator

Synth modules?

Eurorack format Quantizer with Arduino Nano

Synth DIY projects

Turns an ATtiny85 into a "noise chip" suitable for an analogue drum machine such as LDB-1.