navigator-joystick.md

Navigator Joystick

Run with:

node eg/navigator-joystick.js

var five = require("johnny-five"),
    when = require("when"),
    boards, readyList, joystick, led, servo;

boards = {};
readyList = [];

[ "navigator", "controller" ].forEach(function( name ) {
  var deferred = when.defer();

  readyList.push( deferred.promise );

  (
    boards[ name ] = new five.Board({ id: name })
  ).on( "ready", function() {

    deferred.resolve( this );
  });
});

when.all( readyList, function() {
  // console.log( "resolved" );
  var last, dirs, turn;

  joystick = new five.Joystick({
    board: boards.controller,
    pins: [ "A0", "A1" ],
    freq: 100
  });

  led = new five.Led({
    board: boards.navigator,
    pin: 13
  });

  servo = new five.Servo({
    board: boards.navigator,
    pin: 12,
    range: [ 10, 170 ]
  });

  last = 1;
  dirs = [ "left", undefined, "right" ];
  turn = [ "max", "center", "min" ];

  servo.center();

  joystick.on("axismove", function() {
    // 0: left, 1: center, 2: right
    var position = Math.ceil(2 * this.fixed.x);

    // console.log( position );

    // If the joystick has actually moved and it's
    // not in the center...
    if ( last !== position ) {
      last = position;

      if ( position !== 1 ) {
        console.log( dirs[ position ] );
      }


      servo[ turn[ position ] ]();
    }
  });
});

Breadboard

navigator-joystick.fzz

Devices

Documentation

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Contributing

All contributions must adhere to the the Idiomatic.js Style Guide, by maintaining the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using grunt.

Release History

(Nothing yet)

License

Copyright (c) 2012 Rick Waldron waldron.rick@gmail.com Licensed under the MIT license.