This module monitors a voltage on the input and activates one of three gate outputs depending on whether that voltage is rising/falling/staying the same.
This module's pots and LEDs are PCB mounted for easy wiring. To make it compatible with 15V systems only one resistor value needs to change.
For complete descriptions of the way the module is used, and how to build it, including schematics and parts list; download this PDF file.
Boards are available now. Price for 1 PCB set is is $8.
Unfinished eurorack
panels are available for this project, they are 6HP and cost $8 each.
There is
more information here about panels. If you're interested in drilling your own panel for
this project, feel free to use my
drill guide. That image should be printed at 300dpi for proper
scaling.