__Create a UDP server that plays a sound when a message is received.__

* Attach a piezo to pin 8
* Use the `dgram` node module to create a **udp4** socket
* Bind your server to port **1337** and listen for messages
* When a message is received, have the piezo play a tune

## Circuit diagram

```
            Piezo
              _
            || ||
 Pin 8  o---|| ||---o  GND
            ||_||
```

## Docs

- http://nodejs.org/api/dgram.html
- https://github.com/rwaldron/johnny-five/blob/master/docs/piezo.md

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