The 3PDT universal footswitch kit provides DIY pedal builders with a clean and fast way to add an ON-ON stomp switch to their builds for true bypass and LED switching, without the hassle of wiring each switch post individually.
Here’s the schematic –
A huge value for rapid prototyping, the 9-way (0.1″ pitch) 2″ long cable brings out each of the three switches in grouped ways. The switch posts and cable ways are clearly labeled on the screen silk. The cable itself has a color coded strip indicating a pin 1.
Pin 4 of the middle switch also connects to a ground plane on the upper side of the board. This is done for two reasons – it’s typical to use the middle switch for LED switching, so pin 4 can be utilized for the ground return for the LED. Clearly, also having a ground plane above all audio signals should help with electrical interference / return paths also.
The ground plane also has two 1mm holes for additional ground connections – say to wire a grounding washer on the housing.
Made with only quality parts, the kit comprises a 2-layer PCB, an Alpha 3PDT switch, and a 2″ 9-way 0.1″ pitch ribbon cable. (The 2″ dimension is about the length of the plastic carrier – as shown in the pics.)
The flexible cable enables a short connection to your own PCB or Veroboard, which can sit at a different level than the footswitch PCB.
The assembly has many uses – guitar footswitches, synth modules, A/B routers etc;
Available now in our online store.