this is just a random stab in the dark and sure it's not possible at all but looking for thoughts.
i have a usb powered KVM that i want to be able to control remotely without having to press the button on the top of it as it's hidden away.
i know i could do the arduino code to just have a pin go high to simulate the press across the button, but i would need to be connected to ground on the arduino for this to circuit.
so if i was to run the arduino from a power source, take the 5v and the gnd from the arduino then have a pin from the arduino to the cold side of the switch. whats the chances of this working.. yes possibly or get your coat.
i know the other option would be a relay and then just switch that to simulate a button press but i dont have any solid state relays etc and just trying to get away from buying something if i can help it.
or any other ideas would be great.