---

import RPi.GPIO as IO

from gpiozero import CPUTemperature

import time

 

minspin = 10

 

 

IO.setwarnings(False)

IO.setmode(IO.BCM)

IO.setup(14,IO.OUT)

fan = IO.PWM(14, 100)

 

cpu = CPUTemperature()

 

fan.start(0)

 

oldtemp = cpu.temperature

 

while True:

    temp = cpu.temperature

    if abs(temp - oldtemp) < 1.5:

        time.sleep(1)

        print(str(temp)+"  skipped")

        continue

    oldtemp = temp

    if temp > 50:

        speed = ((temp - 45)*4)+minspin

        if speed > 100:

            speed = 100

        fan.ChangeDutyCycle(speed)

        print(str(temp)+"  "+str(speed)+"  fan on")

    else:

        fan.ChangeDutyCycle(0)

        print(str(temp)+"  fan off")

    time.sleep(1)

fan.stop()

IO.cleanup()

print("done")