sudomod

I am kinda new into building gameboy zero but i want to know how can i wire low pass filter that i found on some guides into this schematic https://www.tinkerboy.xyz/wp-content/up ... ring-1.jpg
So if somebody can post me schematic with it or just write it for me, i'll be happy ^^

Connect the input part of your low pass filter directly to the Pi and the output to the PWM pads on the tinkerboy board.

thank u