johnny-five/docs/accelerometer.md

The JavaScript Arduino Programming Framework.

# Accelerometer

Run with:
```bash
node eg/accelerometer.js
```


```javascript
var five = require("johnny-five"),
  board, accel;

board = new five.Board();

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

  // Create a new `Accelerometer` hardware instance.
  //
  // five.Accelerometer([ x, y[, z] ]);
  //
  // five.Accelerometer({
  //   pins: [ x, y[, z] ]
  //   freq: ms
  // });
  //

  accel = new five.Accelerometer({
    pins: ["A3", "A4", "A5"],
    freq: 100,
    threshold: 0.2
  });

  // Accelerometer Event API

  // "acceleration"
  //
  // Fires once every N ms, equal to value of freg
  // Defaults to 500ms
  //
  accel.on("acceleration", function(err, data) {

    console.log("acceleration", data.smooth);
  });

  // "axischange"
  //
  // Fires only when X, Y or Z has changed
  //
  accel.on("axischange", function(err, data) {

    console.log("axischange", data.smooth);
  });
});


```


## Breadboard/Illustration


![docs/breadboard/accelerometer.png](breadboard/accelerometer.png)
[docs/breadboard/accelerometer.fzz](breadboard/accelerometer.fzz)




- [Triple Axis Accelerometer, MMA7361](https://www.sparkfun.com/products/9652)
- [Triple-Axis Accelerometer, ADXL326](http://www.adafruit.com/products/1018)






## Contributing
All contributions must adhere to the [Idiomatic.js Style Guide](https://github.com/rwldrn/idiomatic.js),
by maintaining the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using [grunt](https://github.com/cowboy/grunt).

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