I think I've worn down the clicker I got for my camera. I've pressed it thousands of times this past week and a half.
The output is just a TRS cable that turns into micro USB at the other end. Makes me think I could whip up something using a few keyboard switches?
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I opened it up, not expecting to see much, and was still surprised with how little there is to it. You're basically just pushing down on some slightly springy metal strips that make a circuit when they touch. That's it.
Looks like a wire needs to be resoldered.