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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical monitoring box (was Re: small device with IP address)
2000-12-22-11:30:28 Tom: > It wouldn't be that difficult to roll a simple Altoid-tin > sized board w/ an enet port (he say's before > he's done it:) Sounds right to me. > Seriously, there are a # of SOC in development for > refridgerator web-interfaces & the like. SOC? Or SBC? > Question is, beyond pinging an isolated device, > what's most useful? Keep It Simple, no question. > Could tack on an interface for; temp sensors, > power condition monitors, ect. For cost/benefit tradeoff, I'd personally favour simply a temp sensor. I _think_ it oughta be possible to package a little wart including network I/F and simple-minded temp sensor that powers itself entirely off the ethernet interface itself, i.e. doesn't need any other power supply. Might need to be plugged in for a few seconds before it succeeds in storing enough reserves to make it through link negotiation, but if you could avoid having to plug into a power socket at all it'd be so much handier. > Further, how to best power; wall wart, batt, > combination of the two ? Definitely none of the above. How about a box that responds to just one protocol type, I'd tend to vote for a trivial UDP packet that it doesn't even bother decoding, just checks dst port and tears out src port and addr, with a reply packet containing whatever encoding is easiest to generate of the latest measurement off the temp sensor. -Bennett Attachment:
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