here is my code:
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and here is my physical setup(Pins 3.3v, GPIO4, GND):
![Image]()
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My full error is :This happens with GPIO #4 and GPIO 14 as of now with my Raspberry Pi 4B

and here is my physical setup(Pins 3.3v, GPIO4, GND):





My full error is :
Code:
Traceback (most recent call last): File "/home/procidic/LightSensor.py", line 2, in <module> ldr = LightSensor(4) File "/home/procidic/.local/lib/python3.9/site-packages/gpiozero/devices.py", line 108, in __call__ self = super(GPIOMeta, cls).__call__(*args, **kwargs) File "/home/procidic/.local/lib/python3.9/site-packages/gpiozero/input_devices.py", line 679, in __init__ self.pin.when_changed = self._cap_charged File "/home/procidic/.local/lib/python3.9/site-packages/gpiozero/pins/__init__.py", line 432, in <lambda> lambda self, value: self._set_when_changed(value), File "/home/procidic/.local/lib/python3.9/site-packages/gpiozero/pins/pi.py", line 319, in _set_when_changed self._enable_event_detect() File "/home/procidic/.local/lib/python3.9/site-packages/gpiozero/pins/rpigpio.py", line 226, in _enable_event_detect GPIO.add_event_detect(RuntimeError: Failed to add edge detectionStatistics: Posted by Procid — Tue Jul 29, 2025 9:00 pm