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Any projects that use the ethernet port, etc. from an old cable modem? Answered

Have several old working cable modems and I would like to see if I can reuse any of the parts inside. i.e the ethernet port magnetics to make my electronic project work over LAN.


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Best Answer 12 years ago

There's not really much in them. You can try to get the ethernet port off the board, but that's not very interesting. Unfortunately, like many modern electronics, I suspect that inside the cable modem is a handful of highly integrated, extremely specialized surface mount chips with high pin counts that can't really be used for anything else and not much else.

In order for your project to work over a lan, you're going to need an ethernet controller. Your projects will also have to know how to speak TCP/IP, or at least UDP and IP. You'll need something like UIP for that if you want to go that route.

If, on the other hand, you just want to use ethernet cables and connectors, you don't need all that. You won't be able to plug them into networking equipment though, and doing so could damage the equipment! I have a bunch of ethernet cable I reuse, but I hack off the ends and solder directly to the board.