In this episode of JavaScript for Internet of things (IoT): step by step tutorial how to wire LED on Raspberry Pi 2 with Raspbian GNU/Linux distribution and how to control it using open source project from GitHub written in JavaScript and Node.js. Exact steps: http://www.instructables.com/id/JavaScript-for-IoT-Blinking-LED-on-Raspberry-Pi-Wi/ Source code: https://github.com/leon-anavi/rpi-nodejs-examples