This is my first attempt at PCB design. I chose a simple circuit and followed along to DigiKey's KiCad tutorials.. The One Chip Pony only does one trick—and it only uses one chip!
Clown color hydro-dip finish felt appropriate.
Maybe it looks a little silly in such a large enclosure, but I needed the extra room for the giant knob! This layout was designed specifically to accommodate the knob and switch, and also to be easy to troubleshoot.
An input gain stage feeds a comparator. Instead of amplifying the signal until it clips, the signal is compared to the bias voltage. If the input is above the threshold, the output swings to the ground rail; if below, it swings to the supply rail. It's maximum fuzz and maximum compression all the time. Picking dynamics do come through a little, but as changes in timbre, not volume. The "Gate" switch is actually changing the input gain and the input impedance. More gain means less aggressive gating. The upshot of the gate is that the pedal is dead silent when you're not playing!
Here's a demo:
I have a couple extra PCBs. If anyone is interested, DM me.
Clown color hydro-dip finish felt appropriate.
Maybe it looks a little silly in such a large enclosure, but I needed the extra room for the giant knob! This layout was designed specifically to accommodate the knob and switch, and also to be easy to troubleshoot.
An input gain stage feeds a comparator. Instead of amplifying the signal until it clips, the signal is compared to the bias voltage. If the input is above the threshold, the output swings to the ground rail; if below, it swings to the supply rail. It's maximum fuzz and maximum compression all the time. Picking dynamics do come through a little, but as changes in timbre, not volume. The "Gate" switch is actually changing the input gain and the input impedance. More gain means less aggressive gating. The upshot of the gate is that the pedal is dead silent when you're not playing!
Here's a demo:
I have a couple extra PCBs. If anyone is interested, DM me.