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Topic: Power on/off with momentary button (Read 726 times) previous topic - next topic


Is it possible for a beginner like me to use a momentary button as an on/ off switch for my arduino. It is being powered by battery.

I only have access to 'standard' electronics components at my local store. I have seen fancy prebuilt pcb's I can order online but I don't have time for that.

Can someone explain how I could do this simply with a relay or transistor? I would prefer something solid state as I assume this would take up less room.

Thank in advance for any input.


Jun 16, 2011, 11:53 am Last Edit: Jun 16, 2011, 11:54 am by Korman Reason: 1
Something like this? The circuit is here.
Here you have a version that uses a debouncer and a flip-flop and some nice explanation how it works.

If you want to look for more on Google, search for push-button power circuit



I write books about Arduino and Electronics: http://simonmonk.org

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