Controlling an arduino board using an inexpensive ethernet module. Step by step instructions on wiring and an example sketch. I also discuss how to use MIT's app inventor to create apps
more information here - http://forum.arduino.cc/index.php?topic=198340.msg1463372#msg1463372
Link to the library - http://trollmaker.com/article11/arduino-1-0-with-enc28j60-ethernet-shield-v1-1
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