raspberry pi example

blink.py

import RPi.GPIO as GPIO
import sys
from time import sleep

# to use Raspberry Pi board pin numbers
GPIO.setmode(GPIO.BOARD)

# set up GPIO output channel
GPIO.setup(8, GPIO.OUT)

while 1:
  keyin = sys.stdin.read(1)
  if keyin is not False:
    GPIO.output(8, GPIO.HIGH)
    sleep(0.1)
    GPIO.output(8, GPIO.LOW)
    keyin = False