How to reduce the first-speed fan speed of VIM3 under the CoreELEC system?

VIM3
1

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

coreelec

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

Releases · CoreELEC/CoreELEC · GitHub CoreELEC 21.3-Omega

Please describe your issue below:

The system offers three fan speed settings, but doesn’t show the actual RPM. Even the lowest setting sounds too loud to me, and I want to adjust the minimum speed to a comfortable level—like the lowest fan speed in the official Android firmware, which is really quiet.

But I don’t know where to modify the RPM corresponding to the lowest fan speed in CoreELEC.

2

Hello @UncleFat2026

If your VIM3 MCU version is 0x03 and above then you can control the speed via the duty.

Check the MCU version:

i2cget -f -y 4 0x18 0x13

Setup the FAN PWM duty: 0~100

e.g. setup 30% duty.

i2cset -f -y 4 0x18 0x8a 30