If you're like me and don't want to maintain a web server yourself but would rather receive your sensor data from Raspberry Pis and control your sensors via the Internet, a Cloud service might come to mind. This is an example of hooking up a PIR motion sensor on a Raspberry Pi with IBM IoT platform on Bluemix.

This basic tutorial is composed of two parts:

1. device scripts in python: reads data from a motion sensor on Raspberry Pi and publishes motion events to IBM IoT platform.

2. Web Application in Node.JS, Express.JS, and Angular.JS: subscribes to Raspberry Pi for motion sensor data, implements REST APIs and renders the sensor data in the view.

For more details, check out the recipe below:

Build an IoT Bluemix app in Node.js with sensors on Raspberry Pi