johnny-five/eg/claw.js

The JavaScript Arduino Programming Framework.

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

board = new five.Board();

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

  var claw = new five.Servo({
    pin: 9
  }),
    arm = five.Servo({
      pin: 10
    }),
    degrees = 10,
    incrementer = 10,
    last;

  this.loop(25, function() {

    if (degrees >= 180 || degrees === 0) {
      incrementer *= -1;
    }

    degrees += incrementer;

    if (degrees === 180) {
      if (!last || last === 90) {
        last = 180;
      } else {
        last = 90;
      }
      arm.to(last);
    }

    claw.to(degrees);
  });
});


// Claw Assembly Instructions
// http://blasphemousbits.wordpress.com/2011/11/05/sparkfun-robot-claw/