There have been a few of these questions during the last months.
So here is what you can do if you want to use a NoPe switch at the control outputs of an ES-8 or superswich or whatever unit is out there that hav 5V control signals to be programmed.
There is an electronically good and a bad solution (of cource the bad one is faster to achieve) but we focus on the “good” one here.
This is what you need to do:
- Remove C1
- Replace R3 (10k) with 100k
- Replace R1 (68k) with 1k
- lift (cut off) pin 3 of IC1
- Connect GND of controller to GND of Nope
- Connect Control of Controller to SW. (mind the dot!) its the pad next to C3
For reference here is where the bits and pieces are located: