Now that we've set up our development environment, it's time to start writing code and making LEDs light up! We'll start by running the Hello World! of Johnny-Five robotics: making an LED blink. In the process, we'll look at how to navigate the Johnny-Five and Raspi-IO API documents, and examine the event system in Johnny-Five.
The following topics will be covered in this chapter:
- Creating a project folder
 - Installing Johnny-Five and Raspi-IO
 - Wiring up an LED
 - Making an LED blink