Cgs synth

> I'm just about done with my first DIY module from the CGS, the simple
> wave folder. I'm just waiting for a Semi from mouser and all
> components will be soldered to the PCB.

Welcome aboard!

> I can't seem to find a straight foward explanantion of audio jacks,
> specifically 3.5 mm jacks. I need to figure out exactly which patch
> point on the jack is the input, output and ground.

The easiest way to answer this question is to figure it out yourself. :-) In
all seriousness, there is more than one kind of jack out there, so you'll
have to examine your own particular jacks to figure out what's what. Stick
a patch cable into a bare jack and use a continuity tester of some sort
(like an ohm meter or continuity beeper on a DMM) to figure out which lug on
the jack connects to the ground of the cable. Then figure out which one
connects to the tip of the cable. The remaining lug is the "NC" lug, or
Normally Closed lug. This lug connects to the lug for the tip conductor when
no cable is inserted in the jack, but is disconnected when a cable is
inserted. In the case of the Simple Wave Folder, this lug is not used.

> Also, according to the schematic the input going through the 100k pot
> needs to grounded. I think that means I need to wire the ground output
> of the pot to the "0V" in on the pcb thats between the 2N3906 and 15k
> resistor. Can someone verify that this thinking is correct?

It's a little difficult to make out from the image on Ken's website, but
yes, this looks (and sounds) to be correct.

Have fun!

--Adam