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, ao=FB 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=20 > temperature iButton is $7, and bare DS1920s are probably a lot less=20 > than that. Also, DalSemi has had major problems producing=20 > Thermochrons and quantities have been pretty limited for the last=20 > couple years. (A Thermochron is a nifty toy to have though - I've had=20= > fun with mine.) I definitely want one :) > Clarification: The bare temperature device is the DS18S20. In small=20= > quantities they're $2.57 from DalSemi. In really small quantities=20 > they'll probably send you free samples. ok > The DalSemi 1-Wire bus is really a bus - if you want more devices you=20= > just wire them onto the bus (i.e. connect them in parallel with the=20 > other devices). > > fyi, I played with mlan3 a little bit. I connected one of the DS1920=20= > probes from my Spiderplant HLT into a DS9097U, and the 'temp' program=20= > from mlan3 worked fine and was able to display temperature readings=20 > from the probe. great, thanx a lot, I'm going to order the hardware after my vacation,=20= so that I'll have a funny september. And with some luck I'll be able to=20= plot the temperature of Steve Jobs Keynote at Apple Expo (Paris) ;)) patpro --=20 "Rien ne se perd, rien ne se cr=E9e, tout s'empile" - Mon bureau -
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