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[pi8] LED Blink test script

Note that it is phyton code, copy the following text as it is in a file
import RPi.GPIO as GPIO
import time
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)
GPIO.setup(3,GPIO.OUT)     #Define pin 3 as an output pin

while True:
        GPIO.output(3,1)   #Outputs digital HIGH signal (5V) on pin 3
        time.sleep(1)      #Time delay of 1 second

        GPIO.output(3,0)   #Outputs digital LOW signal (0V) on pin 3
        time.sleep(1)      #Time delay of 1 second