This is an all analog synthesizer module with four channels of envelope generation. Each envelope generator has a single input, output and decay knob. This is the same envelope generator circuit as used on BMC18. It's useful for creating percussive sounds.
This module is compatible with 12V and 15V systems with only a few resistor changes and has multiple power headers. Only the potentiometers are attached to the PCB so any style jack can be used.
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 is $8.
Unfinished eurorack
panels are available for this project, they are 8HP 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.
