Controlling a drone with google glass. Requires you install and run https://github.com/monteslu/Face on glass.

drone.js

var WebSocket = require('ws');
var arDrone = require('ar-drone')
var ws = new WebSocket('ws://192.168.1.237:1338', {protocolVersion: 8});
ws.on('open', function() {
    console.log('connected');
    ws.send(Date.now().toString(), {mask: true});
});
ws.on('close', function() {
    console.log('disconnected');
});
ws.on('message', function(data, flags) {
    try {
      data = JSON.parse(data); 
      processMessage(data);

    } catch(err) {
      console.log(err)
    }
});

var drone  = arDrone.createClient({
  ip: '192.168.1.50'
}); 

var prevZ;
var prevX;
function processMessage(message) {
  if(message.buttons.B){
    console.log('land')
    drone.land();
  } else if (message.buttons.A){
    console.log('takeoff')
    drone.takeoff();
  }

  if(message.orientation){
    console.log(message.orientation.roll)
    var z = message.orientation.pitch;
    var x = message.orientation.roll;

    if(prevZ == null){
      prevZ = z;
    }

    var direction;
    if(z > -75){
      direction = 'forward';
      drone.front(1);
    } else if(z < -100){
      direction = 'backward';
      drone.back(1);
    } else {
      direction = 'still';
      drone.stop();
    }

    if(direction === 'still'){
      if(x > 25){
        drone.left(1);
      } else if(x < -25){
        drone.right(1);
      } else {
        drone.stop();
      }
    }

    prevZ = z;
    prevX = x;
  } else {
    drone.stop();
  }

}

For installing and running face:

(with glass connected)

adb install ~/path/to/face
adb shell am start -n com.iceddev.face/.MainActivity