Raspberry PI 2 – Blinking LED

Here’s a short Python script to toggle an LED using GPIO.

#!/usr/bin/env python

import RPi.GPIO as GPIO
import time
pin = 15
blinkSpeed = 1/5.0 #blink x times per second
GPIO.setmode(GPIO.BOARD)
GPIO.setup(pin, GPIO.OUT)
try:
 while True:
  print('PIN {} is going HIGH'.format(pin))
  GPIO.output(pin, GPIO.HIGH)
  time.sleep(blinkSpeed / 2.0)
  print('PIN {} is going LOW'.format(pin))
  GPIO.output(pin, GPIO.LOW)
  time.sleep(blinkSpeed / 2.0)
finally:
 print 'finally'