Self Oscillation Footswitch

[playpunk]

Hello

I was inspired by watching the Pete Thorn demo of the Wave Cannon MKII from Caroline Guitar Company, and I have spent some time hunting around for a mod to add positive feedback to the input for a self-oscillation effect. I think I will either hardwire the octaves or squish a submini spdt in there somewhere, instead of having those on a stomp.

I looked on DIY stompboxes, and saw this thread (http://www.diystompboxes.com/smfforum/index.php?topic=10408.0) on the DBA "total sonic annihilation" but haven't been able to find anything more.

I don't really know anything about the differences between positive and negative feedback, except that one reduces gain and the other pumps it up.

Anybody got any ideas on this?