Trying to use the Pi5 PWM feature for pin 32 = GPIO12. Using Python code.
I have never come accross so many contradictory instructions for suposedly achieving this that are out there.
Has anyone here succesfully done it in practice?

 

not in a while...

software PWM is possible but you would want hardware PWM. but that requires enabling it.
from command line:
sudo nano /boot/firmware/config.txt

then add following line
dtoverlay=pwm-2chan,pin=12,func=4,pin2=13,func2=4

save and close
then reboot pi

from gpiozero import PWMOutputDevice
from time import sleep

# Initialize GPIO12 (Pin 32)
# Frequency defaults to 100Hz; you can specify it here.
pwm = PWMOutputDevice(12, frequency=1000)

try:
    while True:
        # value is the duty cycle from 0.0 to 1.0
        pwm.value = 0.5  # 50% duty cycle
        print("PWM at 50%")
        sleep(2)
      
        pwm.value = 0.1  # 10% duty cycle
        print("PWM at 10%")
        sleep(2)

except KeyboardInterrupt:
    pwm.close()

fir high precision hardware pwm install rpi-hardware-pwm library ( pip install rpi-hardware-pwm )
then

from rpi_hardware_pwm import HardwarePWM

# GPIO12 is Channel 0 on the Pi 5
pwm = HardwarePWM(pwm_channel=0, hz=1000, chip=2)
pwm.start(50) # 50% duty cycle

 

Thanks I will give it a try,
From what I have I have gathered so far, Pi5 PWM is a veritable minefield !
I have seen in a couple of places mentioning that the fan is using one of the PWM outputs, I am not sure how I can confirm this and which designated PWM exactly is being used, ?