this post was submitted on 01 Feb 2025
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self actuating toggle switch? (midwest.social)
submitted 3 weeks ago by socphoenix@midwest.social to c/askelectronics@discuss.tchncs.de
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I have a pet project I've been working on to modernize an electric organ console, and one of the final things needed are toggle switches. On a modern organ these are able to be manually toggled, or they can be flipped up/down programmatically using electromagnets (video). The ones purpose built for this are obscenely expensive but I can't find anything even remotely similar. Am I crazy for thinking this kind of switch are used in more things than just organs?

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[–] Rivalarrival@lemmy.today 6 points 3 weeks ago (5 children)

The only thing I've seen that automatically toggles a switch is a useless box.

I've been looking for a self-toggling switch off and on for awhile now.

[–] socphoenix@midwest.social 3 points 3 weeks ago (4 children)

well dang. The ones I linked are $35-55 a pop new and the organ I have would need roughly 73 of them lol. Barring a miracle find from someone I'm assuming the touch screen I've been using is there to stay.

[–] Rivalarrival@lemmy.today 2 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

I just had another thought on this. A servo isn't just a rotational actuator like a motor. It is also an encoder (Potentiometer). It knows what position it is in, and can be back-driven into a different position. You can use a servo as both the physical toggle and as the actuator to flip that physical toggle.

https://learn.adafruit.com/analog-feedback-servos/servos-as-input-devices

You can modify regular servos to break out the wiper; you don't need to purchase a special feedback servo.

[–] socphoenix@midwest.social 1 points 2 weeks ago

This might work with the original parts which would be shockingly nice, I have a few cheap Amazon servos on order to see if they might work

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