BMC24. Midi To Gate Converter

The MIDI To Gate Converter is a simple to use utility module. It allows you to easily use your MIDI equipment to control the timing in your modular system. It features eight outputs with LED indicators, a Trigger/Gate switch, a master reset button and a DIP switch to select MIDI channel.


This module was designed to be built on a limited budget with minimal wiring (only two wires!). It is comprised of two PCBs and a pre-programmed microcontroller. The TOP PCB is for all of the ICs and power supply connection. The BOTTOM PCB is for all the jacks, LEDs and switches. The only BOTTOM PCB right now is set up for Eurorack using 3.5mm jacks and fits in an 8HP space. The documentation contains enough information for people in non-Eurorack formats to create their own BOTTOM PCBs. The circuit is designed to work with multiple power supply ranges.

For a parts list, schematics and detailed building instructions, please download this PDF file.  

For a Two PCB and microchip set the cost is $26.
For just the TOP PCB and a microchip, the cost is $18.
Unfinished panels are for sale for $8 each. Please read this page on unfinished panels before ordering.
If you'd like to drill your own panel, here is the drill guide that I use to make these panels. It should be printed at 300dpi.