Logic Module
Logic module built around the CD40xx logic function chip series. The logic function can be chosen trough replacing the IC on the backside. Nor (4001), Nand (4011, 4093), Or (4071), And (4081), Xnor (4077), Xor (4030, 4070). Produces ring modulation effect at audio rate.
Available as an assembled Module and as a DIY project.
This Module is currently available.
$117