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The clamp is actually driven by a DC motor also controlled by a relay,
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The relay board is a 5 volt board and is actually powered by the 5 volts output from the nano.
- My switch wiring is roughly 15 to 18 in long some shorter, however none of them run in parallel with any power lines.
- As soon as I apply power to the nano it goes into action and starts working its way through the code without the buttons/switches being pushed.