Creating a remote wah from a Crybaby GCB-95.

[william]

I've been planning on taking one of my old unused craybaby wahs and removing the GCB-95 board and wire it to an expansion board that addes the buffers from the GCB-95F (Classic Crybaby).  The wah PCB and expansion PCB would then be moved into an enclosure in my rack.  The wah shell would then be used as a controller for the wah.  I use a wireless receiver in my rack and hate running cables to the stage, I'd prefer to keep everything in the rack. 

I've figured out the schematic for the Classic Crybaby (My current goto wah) and have designed a board that adds the op-amp buffers and true bypass from that model.  I've also added an LDR to replace the wah pot and a relay for the switching.  The plan is to rewire the wah shell to hold a Pot to control the LDR and use the switch to control the relay.  The expansion board utilizes the header from the wah's PCB to connect to the expansion board.  The input, output and power jacks on the wah PCB are replaced by jacks on the expansion board. 

My hope is that someone could look over the added parts and point out any serious issues.  Also, if someone could suggest the type of connector the crybaby uses and where to get it, the type of jacks it uses and an enclosure that would fit the PCB boards.  The two pcb boards measure about 6.5 inches by three.

Schematic w/ original wah and expansion parts.


Preliminary PCB design.

[gemedina]

Hello friend, I don't speak English, so excuse me, I'm from venezuela, I have a problem with my wah and want to make a new pcb, I saw your post could you help me? I need print-ready pcb and well transfer it to blade, I am fond of electronics and do circuits on the pc, I just need to fix the pcb could give me this information? Thanks to hand

[R.G.]

The old Craig Anderton version of a remote wah is a lot simpler, and works well.