jetson fan control sticky

this sends voltage to the fan header

sudo sh -c 'echo 255 > /sys/devices/pwm-fan/target_pwm'

and i can see the fan tries to start-the blades twitch a little. I have to manually spin the fan to get it to start.

if I stop the fan with

sudo sh -c 'echo 0 > /sys/devices/pwm-fan/target_pwm'

and then try to restart it, the same sticky behavior occurs.

This is with the recommended noctua NF-A4x20 directly attached to the header with nothing in between (no resistor, splitter, etc)

Not sure, but I think there are two models, one is 12V and the other one is 5V. You would use the latter one for Nano.

That is correct HP, since the Nano supplies 5V on the fan header, you would ideally want to use the NF-A4x20 5V PWM version.

Some users have reported that their 12V fans have been working with Nano (at a lower RPM), but you may see some weirdness like this with 12V fan.