Python • Failed to add edge detection Error

Every time I run this code to detect a button press I get the error: “RuntimeError: Failed to add edge detection”

The code: import RPi.GPIO as GPIO
import time

BUTTON_PIN = 23

GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(BUTTON_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)

def button_pressed(channel):
print("Button pressed!")

GPIO.add_event_detect(BUTTON_PIN, GPIO.FALLING, callback=button_pressed, bouncetime=500)

try:
print("Waiting for button press...")
while True:
time.sleep(1)
except KeyboardInterrupt:
GPIO.cleanup()

How can I resolve this?

Statistics: Posted by E-man105 — Thu Jun 05, 2025 12:28 am

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