This look like a well supported route to getting Android phones to control hardware via the USB port :<br><br><a href="http://developer.android.com/guide/topics/usb/adk.html">http://developer.android.com/guide/topics/usb/adk.html</a><br>
<br>The Arduino Mega 2560 retails for about $70 US<br><br>Richard<br>