Subj : Re: Pi-FAN for RPi4 with 4 (instead of 3) cables? To : All From : The Natural Philosopher Date : Thu Dec 05 2024 07:48:59 On 04/12/2024 17:46, s|b wrote: > On 03 Dec 2024 10:13:01 +0000 (GMT), Theo wrote: > >> I'm guessing that the blue pin is actually the speed control PWM, and the >> green is to report spin speed back to the Pi. If you don't care about that >> you don't need it. >> >> If you're unsure, you can just wire red and black and ignore the other two >> wires - the fan should spin at full speed and you won't be able to sense the >> spin speed, but maybe that's ok. > > Tnx for the follow-up. According to the shop I could just snip the green > wire, so I've done that. I've set it to run at 60°C and the fan's not > turning (CPU temperature is 48°C). > My Pi 4B runs about that with no fan -- “But what a weak barrier is truth when it stands in the way of an hypothesis!” Mary Wollstonecraft --- SoupGate-Win32 v1.05 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3) .