shakeometer.js

var Cylon = require('cylon');

Cylon.robot({
  connection: { name: 'sphero', adaptor: 'sphero', port: '/dev/tty.Sphero-YBW-RN-SPP' },
  device: { name: 'sphero', driver: 'sphero' },

  setColor: function(color) {
    my.sphero.setColor(color);
  },
  
  work: function(my) {
    var opts = {
      n: 40,
      m: 1,
      pcnt: 0,
    };
    var max = 0;
    my.sphero.detectCollisions();
    my.sphero.setDataStreaming(['velocity'], opts);
    my.sphero.on('data', function(data) {
      x = Math.abs(data[0]);
      y =  Math.abs(data[1]);

      if (x > max) max = x;
      if (y > max) max = y;
    });

    every((1).second(), function() {
      if (max < 5) {
        my.sphero.setColor('blue');
      } else if (max < 50) {
        my.sphero.setColor('lightyellow');
      } else if (max < 100) {
        my.sphero.setColor('yellow');
      } else if (max < 150) {
        my.sphero.setColor('orange');
      } else if (max < 200) {
        my.sphero.setColor('orangered');
      } else if (max < 250) {
        my.sphero.setColor('darkorange');
      } else if (max < 300) {
        my.sphero.setColor('mediumvioletred');
      } else if (max < 400) {
        my.sphero.setColor('orangered');
      } else if (max < 450) {
        my.sphero.setColor('palevioletred');
      } else if (max < 500) {
        my.sphero.setColor('red');
      } else {
        my.sphero.setColor('darkred');
      }

      max = 0;
    });

  }
}).start();