Hands-On Robotics with JavaScript

Taking a look at the LED-blink project

The first thing we'll need is from the Raspi-IO README: we're going to read and run their led-blink code as our Hello World! Let's take a look at the code as a block: 

const Raspi = require('raspi-io');
const five = require('johnny-five');
const board = new five.Board({
  io: new Raspi()
});

board.on('ready', () => {

  // Create an Led on pin 7 (GPIO4) on P1 and strobe it on/off
  // Optionally set the speed; defaults to 100ms
  (new five.Led('P1-7')).strobe();

});

This doesn't look like much, but there's a lot going on here! The first two lines use require to pull in the johnny-five and raspi-io modules. Then, we begin constructing a board object, and we pass a new instance of the raspi-io module in as its ...