Adafruit Ethernet Shield

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    I assembled and soldered it myself. The power connections are certainly working, as it gets a DHCP address and responds to pings when connected. Now to write some test code.

    www.ladyada.net/make/eshield/

    (photographic side note: I was quite surprised at how well this picture came out. It was taken using an N95 in closeup mode, on a white piece of paper, with a power-saving lightbulb in an anglepoise lamp overhead. I sent it to Flickr directly from the phone and brought up the brightness and contrast using Flickr's online editing. lofi all the way.)

    1. knolleary 109 months ago | reply

      I've not bought one of the Ladyada shields yet - but certainly considering it. For now, I'm persevering with the Nuelectonics one; managed to get it doing ARP and establishing outbound TCP connections yesterday. Still a lot to do to make it as useful as this one though.

    2. Matt Biddulph 109 months ago | reply

      Oh, how did you manage the outbound connections? I was reading the source this morning and it seemed to be based on creating packets by reformating incoming packets (swapping src/dest, recalculating checksum etc) and pushing them back out again. It looked like it would be hard to create packets from scratch.

      I've had this shield kit for longer but hadn't had the time to solder it together, so I started with the nuelectronics as it was pre-assembled. I'm researching as many options as possible for an Arduino workshop I'm going to teach in London in July.

    3. knolleary 109 months ago | reply

      Yes, you are right that the provided source manipulates the incoming packets to generate the outgoing ones.

      I captured a few packets over the serial port and went at them with various IP and TCP specs I found via google. I am at the point where I can generate the necessary packets to establish a connection and send one packet of data - naturally, "Hello World". Not completely reusable at this point, but it proves it is possible.

      My next task is going to enable it to sustain the connection for more useful comms.

      I really like the idea of arduino's as a platform for Spimes/Blogjects/Tweetjects. Plenty of interesting ideas being kicked around at the moment. I have an overdue blog post to write on this subject.

    4. loco539 109 months ago | reply

      Great shot for a camera phone! Who needs a fancy light box anyway.

      Reminds me that I need to pull out my Xport I bought many months ago for a PIC project that never was finished and give it a whirl Arduino style...

    5. michal migurski 108 months ago | reply

      Any chance you could photograph this flipped over, so the solder joints are visible? Close to embarking on my own first adventure in permanence, curious what the right way is to do things.

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