Hi Olivia798,
Are you using the devkit or custom board for Jetson Nano?
What’s the Jetpack version in use?
Is it the result from jtop?
What’s the result if you run JetsonPower GUI to check?
1、ustom board for Jetson Nano
2、jetpack4.6
3、jtop
4、jetpack4.6 nano，不支持JetsonPower GUI
JP4.6(R32.6.1) is quite an old release.
Could you verify with the latest JP4.6.5(R32.7.5)?
I found there’s no FAN on Jetson Nano devkit.
It seems the FAN is added by your vendor.
Please confirm them for details.
有风扇，风扇持续在转动。 但是jtop里先显示的转速是0RPM
yes, your vendor may lost some implementations for FAN so that the tool can not detect the rpm of the FAN.
Oh, I don’t think I really understand what you mean. The device is connected to a fan. What else is missing? Can’t imagine what physical equipment is missing?
I mean the SW implementation rather than physical equipment.
There’s no FAN on Jetson Nano devkit by default so that the FAN is added by customer and your vendor should implement for that.
For our Jetson module like Xavier, Orin series, we would use gpio-based tachometer to count for rpm and hwmon is available to be used.