Wah heel bypass Idea

[RobotZombie23]

I just finished putting together my Tear Jerker wah pedal. It sounds amazing!

I want to make a spring return bypass setup so when the spring pushes the heel all the way back it pushes a button to tell the PedalPCB Basic Relay Bypass (non-latching) to bypass the wah. And when the button is unpressed it engages the wah. Kinda like NickC's Tear Joker but without the extra switch. I was thinking of removing the 3pdt foot switch all together too.

Does this sound doable? Deos anyone see any problems with trying this?

Using this as a normally closed button:

 

[jimilee]

Your ideas are spot on. I would use a spring like this https://a.co/d/hbIgX2h

 

[Feral Feline]

Looking forward to seeing your implementation.

Hoping I can beg/borrow/steal it, too.


I've always hated that (most) wahs' have to go high (toe down) to engage them; I've always felt they should be "neutral" when engaging and return to neutral when disengaging them.




Here's another idea:

Employ a Hall-effect sensor for the switch, that way there's nothing physical that can get bent/broken/damaged.

 

[Robert]

Employ a Hall-effect sensor for the switch, that way there's nothing physical that can get bent/broken/damaged.

Or use a dual-gang pot where the additional gang generates a threshold voltage to trigger the relay at toe-up.

You could theoretically trigger switching at any point in the sweep of the treadle.


I wonder if a Z**X "probe" style copper plate under the rubber tread would work? (Not for the actual sweep, just to detect a foot on the treadle)

 

[RobotZombie23]

Here's another idea:

Employ a Hall-effect sensor for the switch, that way there's nothing physical that can get bent/broken/damaged.

This lead me to find Reed Switches. I was racking my brain to find out how I was going to these mount mouse button switches because it looks like there's too much throw in the red buttons above. I guess I'll see what I can come up with between the 3 and send back what doesn't work. I like Robert's dual-gang and copper plate ideas too. I use a zprobe for my cnc but it's not obvious to me how to make that normally closed. I was going to wait for a sale (Valentines?)to get the Basic Relay board because there's other boards I got my eye on but I might just have to try this sooner rather than later.

 

[Robert]

I was going to wait for a sale (Valentines?)

There will be a second "Black Friday" sale this weekend since Canada missed out because of the strike.