temperature acquisition on FreeBSD

[Patrick Proniewski]

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
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