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1Description

When you want to use the potentiometer knob to control the fan speed, you only need to connect the driver board directly to the 24V DC power supply.

When you need to use the motherboard or Raspberry Pi to control, just take out the potentiometer, connect the signal pin of the driver board to the 5V or 3.3V pin of the motherboard, and connect it to GND.

Marlin:

enable “FAN_SOFT_PWM” and set ”SOFT_PWM_SCALE”to 5

Duetboard:

https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans

Klipper

[fan]

pin: host:gpio26

hardware_pwm: False

cycle_time: 0.005

Package:

1SET WS7040 Blower Fan (Including driver board)