GPIO 4 is turning off automatical

[EckeNeutrum]

Hello,
if i activate GPIO 4 with this script:

Code: Select all

import RPi.GPIO as GPIO
import time
 
GPIO.setmode(GPIO.BCM)
GPIO.setup(4,GPIO.OUT)

GPIO.output(4,True)
    

It's turning on the LED but the LED is automatical getting turned of after some seconds.

If i create a clock

Code: Select all

while True:
    GPIO.output(4,True)
    time.sleep(0.1)
    GPIO.output(4,False)
    time.sleep(0.1)

The Lamp is blinking for a few seconds but then stops automatical.

Could someone please help me?

P.S.
Sorry for bad english, i am from Germany.

[rpdom]

Is 1-wire enabled in /boot/config.txt like this?

Code: Select all

dtoverlay=w1-gpio

If so, comment out that line or disable it in raspi-config or the desktop configuration program.

The 1-wire bus will take over GPIO 4 (pin 7) by default if it is enabled.

[EckeNeutrum]

1-wire is disabled now.
Sadly it's still the same Problem.

[rpdom]

Did you reboot after disabling it?

[bensimmo]

Move to a different gpio, for example gpio17 (physical pin11 ) https://pinout.xyz/
This is not a fix, just a solution.


Is it a Pi4 ?

[EckeNeutrum]

After a reboot it started working again.
Thank you for you solution!

[EckeNeutrum]

Move to a different gpio, for example gpio17 (physical pin11 ) https://pinout.xyz/
This is not a fix, just a solution.


Is it a Pi4 ?

Yes, it is a Pi4
Do i need that 1-wire?
Why can't i just let it disabled?

[rpdom]

If you don't have any 1-wire devices connected (like a DS18B20 temperature sensor, for example), then you don't need it enabled.

[bensimmo]

Move to a different gpio, for example gpio17 (physical pin11 ) https://pinout.xyz/
This is not a fix, just a solution.


Is it a Pi4 ?

Yes, it is a Pi4
Do i need that 1-wire?
Why can't i just let it disabled?

No need to use 1-wire at all, I was just suggestin try a different pin to see if ti works