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Onboard 5V Fan Interface

Onboard 5V Fan Wiring

  • Pi-V2 has an onboard 5V controllable interface for main controller heat dissipation. The wiring method is shown in the figure below.

Commands to execute via SSH before adding configuration

  • FAST system does not require this step
wget https://cnb.cool/3dmellow/public/static-files/-/git/raw/main/host/linux-dtb-current-fly-sunxi64_3.3.5_arm64.deb && sudo dpkg -i linux-dtb-current-fly-sunxi64_3.3.5_arm64.deb
sudo reboot

Reference Configuration

[mcu host]                      # FlyOS has already generated a linux MCU by default, just define it to use           
serial: /tmp/klipper_host_mcu

[temperature_sensor FLY-Pi] # Host temperature
sensor_type: temperature_host


[temperature_fan core_fan] # Host heat dissipation fan
pin: host:gpiochip1/gpio106 # Host fan pin
max_power: 1.0
sensor_type: temperature_host # Set to host controller temperature
control:watermark # Control method
target_temp: 48 # Host heat dissipation fan activation temperature
min_temp: 0 # Minimum temperature, below this temperature an error will be reported
max_temp: 90 # Maximum temperature, above this temperature an error will be reported
off_below: 0.10
kick_start_time: 0.50
max_speed: 0.8 # Maximum speed, 80% of full power operation
min_speed: 0.3 # Minimum speed, 30% of full power operation
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