I always get something extra for working on a new module. The latest ADSR incarnation has an AD-LFO function. Here is a no-tranny version. I used a 4069 instead.The pcb layout is untested?? Works exactly the same but it's more compact. http://www.mindspring.com/~vco/pics/eg-lfo-sd.gif http://www.mindspring.com/~vco/pics/eg-lfo-pc.gif -tg