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3PDT Footswitch PCBsVerified
Based on the 3PDT Footswitch PCBs
From the post
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.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 6 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 1 | ||||
| ×1 | 2.2K | 2.2k | LED resistor; read from the layout by eye | |
| Capacitors 2 | ||||
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | MAX1044 | MAX1044 | read from the layout by eye | |
| LEDs 1 | ||||
| ×1 | LED | LED | indicator, mounted on the board, type not given; read from the layout by eye | |