Let's Make Robots!

How do i use this... (underside of a button)



how do I solder a wire to this so that I can use a microcontorller to trigger it via outputs?

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I would say get glasses first !

What is "this" - is it expecting TTL level voltages?

I can't see what it is but , if a wire already goes into it you can splice.  If its just a board location you can sand it lightly add a little solder - shape and tip a jumper then solder it right onto the board.

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