Onboard 5V Fan Connector

Pi-V2 has an onboard 5V controllable interface for main control cooling, the wiring method is as follows

Reference Configuration

[mcu host]                      # FlyOS has already generated a Linux MCU for you by default, just define and use it           
serial: /tmp/klipper_host_mcu 

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


[temperature_fan core_fan]      # Host cooling fan
pin: host:gpiochip1/gpio103     # Host fan pin
max_power: 1.0
sensor_type: temperature_host   # Set to host main control temperature
control:watermark               # Control method
target_temp: 48                 # Host cooling fan start temperature
min_temp: 0                     # Minimum temperature, errors will occur below this temperature
max_temp: 90                    # Maximum temperature, errors will occur above this temperature
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