GPIO Test Script – Multimeter – Test On/Off (Raspberry- Pi)

import RPi.GPIO as GPIO # import RPi.GPIO module
from time import sleep # lets us have a delay
GPIO.setmode(GPIO.BCM) # choose BCM or BOARD
GPIO.setup(24, GPIO.OUT) # set GPIO24 as an output

try:
while True:
GPIO.output(24, 1) # set GPIO24 to 1/GPIO.HIGH/True
sleep(0.5) # wait half a second
if GPIO.input(24):
print "LED just about to switch off"
GPIO.output(24, 0) # set GPIO24 to 0/GPIO.LOW/False
sleep(0.5) # wait half a second
if not GPIO.input(24):
print "LED just about to switch on"
except KeyboardInterrupt: # trap a CTRL+C keyboard interrupt
GPIO.cleanup() # resets all GPIO ports used by this program