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https://blog.leandrotoledo.org/raspberry-pi-4-poe-hat-fan-speed-control/ #4

Open utterances-bot opened 2 years ago

utterances-bot commented 2 years ago

Raspberry Pi 4 PoE Hat Fan Speed Control

Using the Raspberry Pi PoE HAT on my Raspberry Pi 4 I noticed that the fan speed was too noisy. Here's a way I found to control its speed

https://blog.leandrotoledo.org/raspberry-pi-4-poe-hat-fan-speed-control/

yannickgranger commented 2 years ago

Hey, I tried on ubuntu 22.04 and RPi4, 8Gb and it seems that the same parameters in /boot/firmware/config.txt products no effect. fans are 100%

leandrotoledo commented 2 years ago

@yannickgranger What's the current temperature of your RPi?

You can check by executing vcgencmd measure_temp on the terminal.

And, can you paste the lines that you added on your config.txt?

My first thought is that your RPi might be running hotter than the temperatures suggested in the configuration above.

austwhite commented 2 years ago

@yannickgranger and anyone else looking at this. This only works with the OFFICIAL Raspberry Pi PoE Hat with the 3 wire fan. The clone hats with 2 wire fans do not have any kind of speed control on the fan at all. Just be aware of this, especially given the genuine PoE hat is often about the same price as the clones.