Hi,
We have a custom board with a Orin Nanomodule. I am not able to get the fan operating.
I have verified that nvfancontrol is running and says its active.
When I monitor /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm, I can see the pwm value increasing over time as the module heats up.
I would like to have some guidance on what I may be missing in the device tree setup or is there something that I have not yet configured.
Malcolm
Hi malcolm12,
I’ve moved your topic to the correct category for Orin Nano. (It was in Jetson Nano).
What’s the Jetpack version in use?
Do you want to control the FAN manually or use nvfancontrol service to adjust the FAN speed?
Hi KevinFFF,
I will use nvfancontrol.
Malcolm
Please note that FAN will work according to the temperature since it is controlled by nvfancontrol service.
It is not expected that the PWM value is increasing but your FAN does not work.
Could you get s scope to measure if there’s any PWM output at this moment?
Hi,
I did use a scope and there is no PWM output at the fan. This custom board’s fan does work as I can put an NX Xavier on it and the fan comes one.
Malcolm
Could you refer to the methods in https://elinux.org/Jetson/L4T/peripheral/#Control_PWM_manually to enable the PWM output manually and get a scope to check if there’s PWM output?
I have found the problem.
Thanks for your help.
Malcolm
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