This video tutorial discusses some differences between the W5100 (Ethershield) and the ENC28J60. I will show you how to connect the ENC28J60 to the arduino, download the library Ethercard and get it to work by loading one of the example sketches. This ethernet module is a great way to get Networking capabilites to your arduino project with a small footprint and a smaller price than the Ethershield. You can find the library at this adress: http://jeelabs.net/pub/docs/ethercard/
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