A modular DSP platform that fits into your pocket! Comes with open-source codebase and schematics. Citadel compatible.

Samplotron is an ESP32 hardware sampler for musicians and producers: play WAVs from SD, map samples to MIDI notes, tweak per-sample volume and shot/loop mode, and save live-ready setups on device.

TŒRN is a hands-on standalone open-source sampler and step sequencer built around the Teensy Microcontroller, a 16×16 RGB matrix, with eight sample lanes, three multi-OSC.synth voices, Micro SD storage, four rotary encoders and onboard recording.

An Inventory & Component Aggregator for DIY Audio Hardware Builders

A full groovebox firmware for the M5 Cardputer (ESP32-S3) — synth, sequencer, sampler & mic recorder in one. 🎛️

A modular, hot-swappable, and patchable, Eurorack-compatible simrig/buttonboard system

True Analog FM Synthesizer

🎛️ R.A. Penfold's VCF design adapted as a Eurorack powered module

A panel designer with focus on synth diy. Generates gcode

🎛️ R.A. Penfold's ADSR design adapted as a Eurorack powered module

🎛️ R.A. Penfold's VCA design adapted as a Eurorack powered module

🎛️ R.A. Penfold's VCO design adapted as a Eurorack powered module

🎛️ DIY Synth system bus access utility module

🎛️ DIY synth stripboard circuit of David Haillant's Simple LFO