Teensy code to control a monotron.
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This repository contains the code and schematics to demonstrate how to control a monotron using a Teensy chip and therefore trigger it via MIDI.


contains a simple version of the code where you can control the pitch of the analog oscillator using MIDI


contains a fully fledge expanded version of the monotron/teensy coupling that provides:

  • Midi triggering
  • An additional digital oscillator fed to the monotron via the headphone in
  • Filter envelope
  • Fully controllable via MIDI CC

for more information, see


for sound examples,


Enjoy !