Intel Edison has a Linux inside (Yocto) that we are going to use for running node.js scripts. And mraa library will give us access to its Analogic and Digital PINs from Node.js. Luckily, The Intel XDK IoT Edition is fully compatible with this language, so let's get ready to Rumble....

• First of all setup your XDK environment as explained in the getting started guide
• Access your Edison via SSH (your laptop should be in the same WIFI network your Edison is)

ssh root@your_edison_ip

Then, we can install required Node.js libraries, as request (used as HTTP Client in our example)

npm install request

• Create a new project in XDK, and replace its main.js file by the one contained in this tutorial
• Configure your FIWARE credentials

FIWARE_APIKEY = "xxx"

• Select your device from the IoT devices list that appears on the bottom-left part of the screen. If you can't find it, just select "Add Manual Connection" and fill the blanks with your Edison ip address, user name and password.
• Please make sure that you've already plugged light sensor into A0 analog input and button sensor into A1.
• Upload the file to your Edison clicking on the "hammer" button.
• Once it is uploaded click on the "play" button, so the party will start! Your Edison is reading sensors and its data is updated in the FIWARE IoT Stack!
• Next steps: Read the data from you application using NGSI APIs or show it in a cool Freeboard as explained in Visualizing your FIWARE IoT Stack Data