MMJ 0 March 26 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 0 Share this post Link to post Share on other sites
Anna Vahtera 0 March 28 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. 0 Share this post Link to post Share on other sites
