This is a Boolean logic module. It has two channels each with two inputs and gate outputs. The logic function of each channel is selected by the position of the potentiometer. The logical operations available are AND, NAND, OR, NOR, XOR, XNOR.

Demos, build documentation, drill guide, are available here.

Unfinished panels are drilled by hand in my garage, they are bare aluminum that may be scratched.  They are intended to be painted, etched or otherwise finished later.

Pre-Assembled Modules are built after the order comes in.  Build time can be a few days or a few weeks depending on what parts I have on hand.  When ordering, please leave a comment at checkout if you have preferences on what color(s) the panel is painted.