Just set up my Google Coral Dev Board, the install of Mendel was a little rough, but now that I've flashed the board the fan won't spin up even after several reboots.
The heatsink is getting super hot. I'm a noob, any code to fix this and if so, please give me details on how to run said code?
I'm not sure why people down voted this question. To answer you promptly: Current threshold is set to 65 C I believe. As soon as board reaches this temperature, the fan will turn on automatically. The commands below will disable thermal management and turn on the fan continuously:
echo "disabled" > /sys/devices/virtual/thermal/thermal_zone0/mode
echo 8600 > /sys/devices/platform/gpio_fan/hwmon/hwmon0/fan1_target
To get a reading of the boards temperature please use this command below. Please keep in mind that the output measurement is in 1/1000 of degrees celsius.
cat /sys/class/thermal/thermal_zone0/temp
Just change the fan temperature trip point to a lower value, like 50C. You can change the trip point with the following command:
echo "50000" > /sys/devices/virtual/thermal/thermal_zone0/trip_point_4_temp
The current trip point is set at 65000, or 65C. Since the fan is running at full speed and is a little loud for my ears.
I decided to unplug the fan and place two wires into the fan connector and power the fan directly from the 40 pin gpio header. So I then use pin 6 to the black fan wire (ground), and pin 1 to the red fan wire (3.3 volts). Now the fan is running quietly, and constantly, and the best part is it still keeps the Coral dev board cool.