johnny-five/eg/expander-PCF8591.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 virtual = new five.Board.Virtual(
    new five.Expander("PCF8591")
  );

  var a = new five.Sensor({
    pin: "A0",
    board: virtual
  });

  a.on("change", function() {
    console.log(this.value);
  });
});