johnny-five/eg/sensor.js

The JavaScript Robotics and Hardware Programming Framework. Use with: Arduino (all models), Electric Imp, Beagle Bone, Intel Galileo & Edison, Linino One, Pinoccio, pcDuino3, Raspberry Pi, Particle/Spark Core & Photon, Tessel 2, TI Launchpad and more!

var five = require("../lib/johnny-five.js");
var board = new five.Board();

board.on("ready", function() {

  // Create a new generic sensor instance for
  // a sensor connected to an analog (ADC) pin
  var sensor = new five.Sensor("A0");

  // When the sensor value changes, log the value
  sensor.on("change", function() {
    console.log(this.value);
  });
});