There are 2 repositories under midi-clock topic.
UMK4x4 - 4-16 in/out and 3-15 IN/3OUT USB MIDI interface for STM32F103 series board
Sync your animations with MIDI clock or Ableton link (with different creative tools).
A device that takes MIDI clock in and outputs 1v pulses at PPQN intervals compatible with a range of devices including Korg volcas and Teenage Engineering pocket operators.
Realtime infoscreen for jam sessions with MIDI equipment
clone of othmar52/blazing-baton for DEMO