MOTM

Hi All!

I built Mark Media's DV/DT comparator-to-trigger circuit and fell in 
love with it!  Check out 
http://www.wiseguysynth.com/larry/users/mark1/trigger.htm  for the 
description and schematic.

This will provide a trigger from nearly any kind of CV.  Exempli 
gratis - patch the sine out of the '320 to the trigger circuit.  Send 
the throughput to a '300 and the trigger output to an EG.  The EG 
will now send a CV to the VCF, VCA, etc., every time the LFO output 
changes.  Instead of just changing pitch, the synth produces a note.

I found this so useful that I made a dual version (using a TL074, 
556, and double the other parts) and put two of these pcb's into a 
module.  There are three jacks per - in, through, and out - and my 
module has 12 jacks. No controls are needed.

I'll share my pcb layout with anyone who asks.  Those who know me 
will understand that this is a hand layout on a single-side 
copperclad board.  As I've just finished laying out the resist on the 
second pcb, I'll scan the foil side before etching it tonight.  Those 
with photo pcb capability can make a transparency from this.  I'll 
draw up a parts layout as well.

Happy constructing!

Chub

ps - the Supercontroller layout is finished and now being inspected 
for errors.  When my grandson let's me work, that is...

Chub