This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Wednesday, March 11, 2015

3PDT Footswitch PCBs

Got a request for a PCB to make wiring up 3PDT footswitches a little less messy. There seems to be about a dozen ways to actually wire up an effect with a 3PDT, but I went with this wiring scheme drawn up by Bumblebee over on DIYStompboxes as it's fairly neat and efficient. The effect input is grounded with the effect is bypassed, which eliminates any oscillation that might happen in pedals like the Small Stone.

I've drawn up 2 different boards–both have the LED and the LED resistor on board, but one has a MAX1044-based charge pump for when you're building a positive ground effect. It has polarity protection and power filtration on-board as well.


  1. might have another suggestion for this nice little board (makes wiring much cleaner and simpler)
    one that use a icl1660 as its cheaper than the 1044 and one that could be built with a 555, to use with fuzzes with negative ground so they can be chained

  2. How do i find the PDF file if I don't know who created it ? No search feature for that.

  3. is the 2K2 resistor a CLR(for the LED)?

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  5. What size do I print? since when I print the PCB is too small