After getting a Raspberry PI 4 I recognized its temperature in idle was pretty high compared to the Raspberry Pi 2 I used before: 60 °C instead of 40 °C.
Time for some cooling!
I reviewed the PiCoolFAN4 and bought it. Installation was pretty easy, if you use a case with enough space (I use the JOY-IT aluminium case). I'm not (yet) using any passive coolers.
The PiCoolFAN4 comes with a PDF manual and I scripted away the requirements to have it set up as follows:
- use the Raspberry PI temperature instead of its own sensor
- set the mild profile with a maximum temperature and the smoothest temperature stepping
Just run the setup.sh.
If you want to change the temperature threshold afterwards, run sudo i2cset -y 1 0x60 0x0f 0xaa && sudo i2cset -y 1 0x60 0x01 <temp>