This PCB takes a 9 pin 3PDT guitar effect on/off stomp switch along with an LED and resistor, and provides a breakout header to use the switch/LED with guitar effect projects.

When the switch is in one position, the LED is on, the input jack signal is routed to the effect circuit input, and the effect output is routed to the output jack.

When the switch is in the other position, the LED is off and the input jack signal routes straight to the output jack (true bypass).

There is no BOM/parts list because the board is simple and the LED requires manual height adjustment to fit an enclosure if used.

The stomp switches used were from Ali Express and have the same form factor as other mainstream components.