Date: Wed, 6 Aug 2003 21:14:59 +0200 From: Patrick Proniewski <patpro@patpro.net> To: Jim King <jim@jimking.net> Subject: Re: temperature acquisition on FreeBSD Message-ID: <1F406FA2-C846-11D7-A73A-0030654D97EC@patpro.net> Resent-Message-ID: <4595BAC2-C842-11D7-A73A-0030654D97EC@patpro.net>
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On mercredi, aoû 6, 2003, at 15:15 Europe/Paris, Jim King wrote: > That's the one (DS9097U). ok > Thermochron would be more expensive. They're $25 each; a plain > temperature iButton is $7, and bare DS1920s are probably a lot less > than that. Also, DalSemi has had major problems producing > Thermochrons and quantities have been pretty limited for the last > couple years. (A Thermochron is a nifty toy to have though - I've had > fun with mine.) I definitely want one :) > Clarification: The bare temperature device is the DS18S20. In small > quantities they're $2.57 from DalSemi. In really small quantities > they'll probably send you free samples. ok > The DalSemi 1-Wire bus is really a bus - if you want more devices you > just wire them onto the bus (i.e. connect them in parallel with the > other devices). > > fyi, I played with mlan3 a little bit. I connected one of the DS1920 > probes from my Spiderplant HLT into a DS9097U, and the 'temp' program > from mlan3 worked fine and was able to display temperature readings > from the probe. great, thanx a lot, I'm going to order the hardware after my vacation, so that I'll have a funny september. And with some luck I'll be able to plot the temperature of Steve Jobs Keynote at Apple Expo (Paris) ;)) patpro -- "Rien ne se perd, rien ne se crée, tout s'empile" - Mon bureau -
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