@erniman
If you want just look if the system is up or down, you can easly and just connect it (with resistor =>1KOhm) to the power pin of one USB plug. Because PI switch off power on USB if the system is down. Even when power subsist on the board.
Topics created by erniman
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LED Turn on/off when I press a button (GPIO14 )
GamePad/GPIO/USB encoder • 29 Jul 2018, 23:24 • erniman 31 Jul 2018, 12:02