Positive Flanke vom Schieberegister startet Barcodescanner

schieberegister1.py

#!/usr/bin/env python

import RPi.GPIO as GPIO
import subprocess
# import time
# import os

# adjust for where your switch is connected
buttonPin = 4
GPIO.setmode(GPIO.BCM)
# GPIO.PUD_DOWN funktioniert nicht an pin 3 und 5 weil hardcoded ist UP
# GPIO.setup(buttonPin, GPIO.IN, GPIO.PUD_DOWN)
GPIO.setup(buttonPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

while True:
    GPIO.wait_for_edge(buttonPin, GPIO.RISING)
#    os.system("/home/karl/barcode.sh")
    print(subprocess.run(["/home/karl/barcode.sh"], shell=True))

GPIO.cleanup()

typo