![Relay controller](http://shop.mas-effects.com/cdn/shop/products/images_1024x1024_2x_8123cf2e-98e2-47de-88d1-57d44980a229_{width}x.jpg?v=1614437256)
Description
This pre-programmed microcontroller will operate a small signal relay to bypass and engage your DIY guitar pedal. If you want a user-friendly drop-in module, purchase this complete module instead.
The controller sold here will require you to create your own PCB. Follow the schematic in the relay module build docs (optocopuler can be omitted): https://shop.mas-effects.com/products/relay-bypass