RPi 12v 4 wire old cpu fan
July 11, 2024, 08:08
Can I hook up a 12v 4wire old cpu fan to cool my RPi without any extra peripherals?
RPi 4b
No
Totally not possible? Why not?
I’m guessing not enough power
You can get 5volt from the Raspberry Pi but not as much current. And a fan is a motor that is noisy in an electrical sense that can cause harm or issues with the Pi.
arent these standard 40mm 5v fans also without extra circuitry/flyback diode?
Probably. And that is why I answered as I do + High current consumption.