FAN Interface | Radxa Docs (original) (raw)

Connector Specification

The fan header on ROCK 5B / ROCK 5B+ is designed for a 2-pin, 1.25 mm pitch, 5V DC fan connector.

Selection reference

If you are using the official heatsink, see the Radxa Heatsink 6240B specification page. Its fan cable uses a 2-pin 1.25 mm pitch connector.

Connection
Connect the fan to ROCK 5B as shown here
Rsetup select Thermal Governor mode
1. Open a terminal, type rsetup, select Hardware.
2. Enter to Thermal governor
3. The default governor should be power_allocator.
power_allocator
The system defaults to fanless mode or DC fan mode. Ensure that the machine can still work stably without a cooling fan
user_space
1. Select user_space
2. Locate the fan device with the following command.
  ls /sys/class/thermal/cooling_device*/type
  cat /sys/class/thermal/cooling_device*/type

As shown, pwm-fan corresponds to cooling_device4.

Turn off the fan
echo 0 | sudo tee /sys/class/thermal/cooling_device4/cur_state
or
echo 0 | sudo tee /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1
Set the fan to the highest setting.
sudo cp /sys/class/thermal/cooling_device4/max_state /sys/class/thermal/cooling_device4/cur_state
or
echo 255 | sudo tee /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1

step_wise
When the CPU temperature reaches 60 degrees Celsius the fan starts to rotate.
Shutdown and sleep states
The fan should remain stationary during shutdown and sleep.
Refer to
See more at rsetup thermal-governor section

You need to be logged into GitHub to post a comment. If you are already logged in, please ignore this message.