Mellow WS7040 24V Brushless Blower Fan with Driver Board, 6.5kPa, for VzBoT and HevORT

We are committed to developing 3D printer accessories that can be used on all 3D printers. We have 3 main product lines: NF Extruders, NF Hotends and FLY Motherboards and Electronics. We hope our products will bring you better overall experience. We look forward to hearing from you. 1 Description 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: Klipper [fan] pin: host:gpio26 hardware_pwm: False cycle_time: 0.005 If you need a windpipe you can buy it here Package: 1SET WS7040 Blower Fan (Including driver board)