johnny-five/eg/proximity.js

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

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

board.on("ready", function() {
  var proximity = new five.Proximity({
    controller: "GP2Y0A21YK",
    pin: "A0"
  });

  proximity.on("data", function() {
    console.log(this.cm + "cm", this.in + "in");
  });

  proximity.on("change", function() {
    console.log("The obstruction has moved.");
  });
});