BMC59 MultiPWM

picture of the module

This module is a waveshaper that uses several PWM circuits (comparators) in parallel to create "staircase" style waveshapes. It has three outputs with differing numbers of steps in the waveform and voltage controls for the threshold points of the comparators.

Compatable in +/-12V or +/-15V systems. Low Parts Count. PC Mounted pots, and mounting holes. Eurorack and MOTM connecter pads for maximum build flexibility


DEMO 1. This is the sound of a base triangle wave input, then the 8step, 5 step and 3 step outputs from that triangle wave with no modulation.

DEMO 2. This is the sound of a triangle wave run through a VCA before the module. You'll hearthe 8 step, then 5 step and then 3 step outputs. There is some adjustment of HI/LO controls between outputs.

DEMO 3. This the 8 step output with a triangle wave input and a pair of LFOs modulating the HI/LO thresholds.

Boards are available now. Price for 1 PCB 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.