hybridgroup/cylon-raspi

# Raspberry Pi - Button

For this example, we're going to toggle a LED every time a button is pressed.
Both of these devices will be hooked up to a Raspberry Pi.

Before you get started, make sure you have the `cylon-raspi` module installed.

First, let's import Cylon:

    var Cylon = require('cylon');

With Cylon imported, we can now start defining our robot.

    Cylon.robot({

Our robot has one connection, to the Raspberry Pi the hardware will be running
on. For hardware, we're keeping it simple. A LED on pin 11, and a button on pin
7.

      connections: {
        raspi: { adaptor: 'raspi' }
      },

      devices: {
        led: { driver: 'led', pin: 11 },
        button: { driver: 'button', pin: 7 }
      },

With the hardware defined, we can get to the work our robot will perform. And as
you can see, it's enormously complex:

      work: function(my) {
        my.button.on('push', my.led.toggle);
      }

Essentially, when the robot's button emits the 'push' event (when it's pressed),
the LED will be told to toggle.

And voila! We now have a basic light switch. All we need to do now is tell the
robot to start:

    }).start();