joystick.md

Joystick

Run with:

node eg/joystick.js

var five = require("johnny-five"),
    board, joystick;

board = new five.Board();

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

  // Create a new `joystick` hardware instance.
  joystick = new five.Joystick({
    // Joystick pins are an array of pins
    // Pin orders:
    //   [ up, down, left, right ]
    //   [ ud, lr ]
    pins: [ "A0", "A1" ],
    freq: 500
  });

  // Inject the `joystick` hardware into
  // the Repl instance's context;
  // allows direct command line access
  board.repl.inject({
    joystick: joystick
  });

  // Joystick Event API

  joystick.on("axismove", function( err, timestamp ) {

    // Axis data is available on:
    // this.axis
    // {
    //   x: 0...1, ( 0 <-- L/R --> 1 )
    //   y: 0...1  ( 0 <-- D/U --> 1 )
    // }
    //
    // Center is ~0.5
    //
    // console.log( "input", this.axis );
    // console.log( "LR:", this.axis.x, this.normalized.x );
    // console.log( "UD:", this.axis.y, this.normalized.y );
    // console.log( "MAG:", this.magnitude );

    console.log( "LR:", this.fixed.x );
    console.log( "UD:", this.fixed.y );
    console.log( "MAG:", this.magnitude );

  });
});


// Schematic
// https://1965269182786388413-a-1802744773732722657-s-sites.googlegroups.com/site/parallaxinretailstores/home/2-axis-joystick/Joystick-6.png
// http://www.parallax.com/Portals/0/Downloads/docs/prod/sens/27800-Axis%20JoyStick_B%20Schematic.pdf

// Further Reading
// http://www.parallax.com/Portals/0/Downloads/docs/prod/sens/27800-2-AxisJoystick-v1.2.pdf

Breadboard

joystick.fzz

Devices

Documentation

(Nothing yet)

Contributing

All contributions must adhere to 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.