i have a separate device that has a push button switch.is there a simple way to use the arduino to trigger the switch?like a relay or like a transistor or is there a way without?for example a led torch, the switch is not switching the power to the led only switching (triggering) an IC to turn on the torch.thanks
You have to be more precise. Yes, probably it's possible but what is the best/easiest method we can't tell. The "switch" might be a tiny switch on a remote or a massive 400V 3-phase switch. Both switches, both controllable from the Arduino but the solution is quite different...
a relay uses to much power
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