Adding an LFO to PT-80 Delay

Started by soggybag, August 01, 2007, 04:21:51 PM

Previous topic - Next topic

soggybag

I've been working on adding an LFO to a PT-80 delay.

This is a triangle LFO that seems to be working pretty well. This is standard oscillator with an added resistor cap. R3 and C1 soften the edges on the wave form to reduce ticking. On this scope the triangle wave exhibits a rounded peak at the top and bottom.

This works pretty well as it. The indicator LED needs some work. This was a hack to add an LED that would show the pulse of the Triangle wave without being effected by the depth. If anyone has any suggestions on how I can improve this let me know.

Not shown is the original delay pot. I used a 100KB pot in parallel with the LDR.