Fan control

[bibi]

@broberg thx for your input. As mentioned above, i wanted to avoid using a relay to have a silent system

[broberg]

@bibi fan controllers are cheap.

or get 5v fans?

[bibi]

@broberg have already a 5v fan… i am rather interested in gaining knowledge about transistors by building a “project” to cool down my whole MM system.

[harney]

Here is a great system. Fully automatic and silent(ish) with variable control. Took about 5 minutes to make a small board with the resistors and diode and the code is already done.

[link text]https://www.instructables.com/PWM-Regulated-Fan-Based-on-CPU-Temperature-for-Ras/(link url)

[JerryP]

@bibi
I use this one
https://www.elektor.nl/fan-shim-active-cooling-for-raspberry-pi-4

works ferry well