open-source music hardware

tarab
instruments

MIDI controllers, Eurorack modules and guitar pedals, designed and built in Bangalore. Every device ships with its firmware, schematics and build notes.

page 1 · cc 16–31 drag a knob

01 devices

Render of the MIDI-64: a black enclosure with a grid of knobs, two buttons and four red LEDs

USB MIDI controller

MIDI-64

Four pages of CC assignments, with knob pickup so values don't jump when you switch pages. The LEDs double as a binary MIDI channel display. Class-compliant, no drivers needed.

  • 64CCs
  • 4pages
  • 16MIDI channels
  • USBclass compliant

Eurorack · Daisy Patch SM

TI Super Simple Delay

A modelled tape delay into a plate reverb, with CV over every control. Hold A to swell the loop, tap B for shimmer, hold B to reverse, and gate the freeze jack to stutter it.

  • 24-bitstereo audio, up to 96 kHz
  • 480 MHzARM Cortex-M7
  • 64 MBSDRAM for long buffers
  • 10 HPEurorack

Eurorack · Daisy Patch SM

TI Super Simple Daisy

The same board as a voice with V/OCT in: an additive drone with a wavefolder, a TB-303 model for acid lines, and FM percussion that goes from kick to hat. Tap B to switch voices.

  • 24-bitstereo audio, up to 96 kHz
  • 480 MHzARM Cortex-M7
  • 64 MBSDRAM for long buffers
  • 10 HPEurorack

02 workshops

Hands-on sessions on music electronics, synthesis, PCB design and enclosures. The notes, slides and buying guide from past sessions are all online.