This PCB can be used to build brown-sound hot-rod clones by using a single platform - no need to use separate boards for the relays - it will be all integrated.
 
By purchasing this board, you get access to full schematics and layouts tailored for my boards. I've documented most Black Eyes models with schematics, layouts and BOM. In particular:
- Black Eye 100 (normal and deluxe)
- Black Eye 50 (normal and deluxe)
 
Dimensions: 400mm x 70mm