Mainboard Cooling Fan
Wiring
Power Off Before Operation
Before starting, completely turn off the printer and disconnect the power supply. Do not plug or unplug fan cables or touch terminals while powered on.
The FLY-C8 board has an onboard ZH1.5-2P controllable 5V fan connector, which can be used for mainboard cooling. Connect the fan according to the diagram below, and confirm the correct wiring order for GND and 5V.
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5V Fan Connector
- This connector is only compatible with fans rated at
5V. Do not connect12Vor24Vfans. - The fan's rated current must not exceed the specifications of the mainboard connector; if unsure, contact after-sales support for confirmation.
Configuration
Add the following configuration to printer.cfg. This configuration automatically controls the mainboard cooling fan based on the host's temperature; adjust target_temp, min_temp, and max_temp according to actual cooling requirements.
[mcu host]
serial: /tmp/klipper_host_mcu
[temperature_fan core_fan]
pin: host:gpiochip1/gpio106
max_power: 1.0
sensor_type: temperature_host
control: watermark
target_temp: 48
min_temp: 0
max_temp: 90
off_below: 0.10
kick_start_time: 0.50
max_speed: 0.8
min_speed: 0.3
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