MMJ Posted March 26, 2020 Share Posted March 26, 2020 Hi I have an orange pi 3 board ,I want to turn on and use 5v cooler fan that uses GPIO ( pin 2 and pin 4 ) , how can I do that? thank you Link to comment Share on other sites More sharing options...
Anna Vahtera Posted March 28, 2020 Share Posted March 28, 2020 Wait.. both pins, 2 and 4 are +5V pins, you can't use a cooler between to positive pins, you need a ground. Pins 6, 9, 14, 20 and 25 are ground. Connect the cooler wires so that one goes to any of them and the other to pins 2 or 4. (The manual calls those two DCIN, but as far as I know, they work perfectly well as outputs also. Just be aware of that. YMMV.) Also do note that some coolers drain quite a lot of power, so be sure your PSU can power the cooler AND the OPi3 at the same time. Link to comment Share on other sites More sharing options...
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