Im trying to use the Arduino to close a circuit, that allready has a power supply.
To be specific, I ripped the shooter part out of a nerf blaster (including battteries) and now have just 2 wires i need to connect to run it. Is it somehow possible to just plug it into 2 pins and have the arduino connect them? Or is there at least some other device (i know thats just called a button) that could do that using a digital pin?
Since you do not know the voltage nor the current required, the safest way is to use a relay to close the circuit.
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