Armor lite Heat Sink with PWM Fan Control Speed Regulation for Raspberry Pi 4B Module

Description This is a thin and lightweight heat sink equipped with a 3510 ultra quiet cooling fan and the fan supports PWM speed regulation which is perfectly compatible with Raspberry Pi OS Other systems need to manually write python or C code to drive the fan speed through PWM NOTE Supports Raspberry Pi 4B Only Automatic speed control function only supports Raspberry Pi OS Features Lightweight and silentSupport PWM control speed regulationCompatible with official system configurationEasy to install and fixGood heat dissipation effectPackage Includes 1 x Armor lite heatsink with pwm fan for Raspberry Pi 4B1 x Screw driver2 x M2 5x6mm Screws4 x Thermal Pad1 x ManualHow to enable auto adjustable fan Turn on Raspberry Pi and login Open a terminal and typing sudo raspi configNavigate to 4 Performance Options P4 Fan and select YES Input or keep it as 14 OK input temperature in degrees should the fan turn on for example I d like turn on the fan when the temperature reached to 65 degrees input 65 and press Enter How to enable it via Programming Make sure RPi GPIO library has been installed pip freeze grep RPi GPIO If feedback is RPi GPIO 0 7 0means library is OK Open a terminal and create a file named pwm fan control pyCopy and paste following code into the file and save it import RPi GPIO as GPIOimport timeimport subprocessGPIO setmode GPIO BCM GPIO setup 14 GPIO OUT pwm GPIO PWM 14 100 print nPress Ctrl C to quit n dc 0pwm start dc try while True