Code samples for IoT 101 with Raspberry Pi Blog: http://www.pubnub.com/blog/internet-of-things-101-getting-started-w-raspberry-pi/

01.py

import sys
from pubnub import Pubnub

pubnub = Pubnub(publish_key='<your-pub-key>', subscribe_key='<your-sub-key>')

channel = 'hello-pi'

data = {
  'username': 'Your name',
  'message': 'Hello World from Pi!'
}

def callback(m):
  print(m)

pubnub.publish(channel, data, callback=callback, error=callback)

02.py

import RPi.GPIO as GPIO
import time

GPIO.setmode (GPIO.BCM)
LIGHT = 4

GPIO.setup(LIGHT,GPIO.OUT)

while True:
  GPIO.output(LIGHT,True)
  time.sleep(0.5)
  GPIO.output(LIGHT,False)
  time.sleep(0.5)

03.js

var channel = 'disco';

var p = PUBNUB.init({
  subscribe_key: 'your-sub-key',
  publish_key:   'your-pub-key'
});

03a.html

<script src="http://cdn.pubnub.com/pubnub-3.7.1.min.js"></script>

03b.html

<button>Disco on!</button>

04.js

document.querySelector('button').addEventListener('click', function() {
  p.publish({
    channel : channel, 
    message : {led: 1} // trigger
  });
}, false);

05.py

from pubnub import Pubnub
...

pubnub.subscribe(channels='disco', callback=_callback, error=_error)

06.py

def _callback(m, channel):
  if m['led'] == 1:
    for i in range(6):
      GPIO.output(LED_PIN,True)
      time.sleep(0.5)
      GPIO.output(LED_PIN,False)
      time.sleep(0.5)