Wiring the VFE Woodchipper PCB with a standard 3PDT switch

EisengesisFX

Well-known member
@cwsquared kindly sold me his last VFE Woodchipper, which comes with a Truesoft Bypass v3.2. I'm gonna be using my usual 125B instead of the expected 1590B, and I really don't care about relay bypass in general, so is there any way I can just wire this up with a standardt 3PDT switch? Ideally with a standard PPCB 3PDT daughterboard?
IMG_20250609_180057316.jpg
 
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I can"t say for 100% sure, but it looks doable with the Truesoft Bypass V2 schematic I have.

Can you post the V3.2 schem?


Key aspects being maintaining power to the main circuit board, which on V2 are labelled PCB_V+ and PCB_V-.
There is a charge-pump for the Woodchipper that requires a 1N4745A (16V) Zener diode on the V2 you'd need to keep and the power-filtering...

As per normal, using much offboard wiring...
IN-JACK > 3PDT > PCB IN
PCB OUT > 3PDT > OUT-JACK

If using the daughterboard mounted jacks, it makes it a little more convoluted, but still doable.

I'd rig up my own CLR and LED, trying to somehow use the VFE Truesoft's LED/CLR —I say f... good luck with that, just wire up an independent CLR/LED. Still need the daughter board, need to hard wire some jumpers from the board/jacks to/from PCB-OUT PCB-IN to bypass the relay section. It might be a little clunky but it could be funky.


I'm thinking don't populate anything circled in pink:

VFE SWITCHING V2.png


Would need to hammer out the details, and for all I know it's not doable with the newer SPS (maybe it's even easier with SPS layout?).


Tentatively gonna say it's doable, but needs further assessment.
 
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