Use the 3705 cooling fan on HAOS

VIM3
1

Which system do you use? Android, Ubuntu, OOWOW or others?

Alpine Linux v3.19

Which version of system do you use? Please provide the version of the system here:

Home Assistant OS - v6.6.46

Please describe your issue below:

Hi guys,

Does someone has a solution to use the cooling fan managed by the MCU in HAOS. Looks like they forget to include the driver of the fan. Also, I can’t modify the OS by myself (no rights).
Someone already posted an issue on the Git of Home Assistant but no response yet.
I know that I could use the PWM GPIO but I don’t want to go on the hardware of the board.

Thanks in advance !

Post a console log of your issue below:

Capture d'écran 2024-09-22 153049
Capture d'écran 2024-09-22 1530491277×153 15.8 KB

(No fan file)

2

Hello @Thomas_Mlse

You can access the VIM3 MCU to control the FAN.

1 Like
3

Hi numbqq,

Thanks a lot for your answer.
With a friend, we did an add-on in HA that allows you to manage the fan speed with the i2c command.
Github link to the project

1 Like
4

Hello @Thomas_Mlse

Thanks for your effort. :wink: