The opamp needs to be powered from a bipolar power supply. You can see the full schematic on my website linked in the description. Since my synthesizer is eurorack, I use a ±12V supply but the circuit will work with anything from ±5V to ±18V If you want to build your own bipolar power supply here are 2 great videos on the subject you should check out: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pQKN30Mzi2g.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PrsVqHar4u0.html
Just, WOW! So much time and energy involved. While easily duplicated with readily available drum machines, I'm forever in awe of those who can create their own stuff. Kudos!
Very nice! I did a bunch of circuit-bending like a decade ago, and got into diy eurorack stuff this last year, and this seems like a very straightforward way to merge the two. A lot of devices have a playback speed resistor that can be replaced with a potentiometer, but if it's actually part of voltage divider it might be very easy to add CV. Even if not, a vactrol could do the job, too, if a little less cleanly. Those animal noises often get really interesting at low speeds.
Brilliant work. I wish I understood electronics better than I do; I'd love to have a go at something like this. Looking at the reverse of the original PCB, I bet that second IC has a lot more sounds on it than the 8 you're using... though I'm not sure how you'd get access to them.
@@philip6252 You know what, your right. At least what I posted was constructive criticism. What a sad and shameful life you must live to have to go around pointing out everyone else's faults to make yourself feel better. Pitiful....
