Adding TCP/IP Ethernet to PIC - how?

[dhouston]

A couple of things about the ConnectOne.
The pins spacings are metric
if you plan to use it as a web page server it only does port 80.

Other than that it is a good part. I have six in use currently.

The WIZ110SR is easier to interface as it has a DB9 on one end and an RJ45 on the other and comes with a power supply. But, it requires more coding from the PIC side. I'll leave it to those interested to study the docs to understand the differences.

If you have an existing serial device you want to connect to the network, the WIZ110SR is the best choice. If you are designing a PCB and planning some quantity, ConnectOne (or Tibbo) is the way to go. Tibbo requires a lot of coding but they give you examples and 320K of flash to use with it. Your PIC app would probably be the simplest as the Tibbo could handle all of the heavy lifting network-wise.

One additional point in favor of Tibbo. They have a GA1000 WiFi card (802.11b/g) that connects to the EM500 via SPI. At this point they haven't released EM500 firmware to support it but they indicate it is in their plans. Some of their other modules already support it. I think it's a little cleaner than the way ConnectOne does it - mackrackit may convince you otherwise.