[Soekris] Temperature Issues
phk at phk.freebsd.dk
Mon Dec 12 19:15:18 UTC 2005
In message <Pine.LNX.4.58.0512121255520.32600 at armitage.screaming-fist.com>, selfabuse at selfabus
>I was hoping I could rack everybodys brain here for a moment. I have a
>net4521 that is currently acting as a wireless AP for the corporate park I
>work in. It's mounted in a NEMA enclosure out in the center of the park.
>I'm up in PA, and it's started to snow over the past week - Temperatures
>at night have been in the single digits (Farenheit). From about 5:30pm to
>about 9am all our wireless customers keep bouncing up and down.
The 4521 already generates a couple of watts of heat on its own, so you
can gain some extra margin in the low end by insulating it: find some
bubble-wrap (small bubbles!), an old wollen sweater or make a small
box around it with styrofoam. And then put it all in a plastic bag to
prevent circulation from robbing the heat.
Then revisit the issue in early spring before the temperature gets too
If you want to measure the temperature, you can attach a LM50 or
Maxim 1-wire temperature chip to the GPIO port.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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