From: hansen@brittania-arms.Stanford.EDU (Stephen Hansen)
Subject: Re: Thermometer to a Sun
Reply-To: hansen@sierra.Stanford.EDU
Cc: hansen
Organization: Stanford University
Distribution: su
Date: Wed, 22 Jul 92 17:51:06 GMT

In article <1992Jul22.135255.5997@eua.ericsson.se>, euamhk@eua.ericsson.se (Henrik.Martin) writes:
|> Hi! Some time ago there was a discussion on the net about connecting a
|> thermometer to a Sun. Unfortunately, I wasn't quite interested in those
|> things then, so I didn't save any of those news. Could any one with
|> experience from these kind of devices please share his/hers experiences
|> on the subject with me? Is there any kind of special device drivers
|> needed?  Does any one have the code written to a such driver? I'm going
|> to use it in an application that controls a heating device and
|> therefore I need to be able to measure the temperature of the heating
|> device. 
|> 

We are using several wiztemp temperature monitors from

   Network Wizards
   PO Box 343
   Menlo Park, CA  94026
   (415) 326-2060
   info@nw.com
   {ames,decwrl,pyramid,sun,uunet}!fernwood!nw!info

We are very happy with them.  They were very easy to install and the
daemon and various scripts and programs have been invaluable.  It connects
to a serial port where it monitors temperature at user specified intervals
and reports in either Farenheit or Celsius.  You can generate graphs of
temperature vs. time as either ascii, postscript, or X.  Alarm scripts are
invoked for the following conditions: high temp, very high temp, low temp,
very low temp, temp rising, temp dropping.  The last two are invoked when
the rate of change of the temperature exceeds some value.

The last time I responded to a question about temperature monitors I
received the following message.  I don't have any experience with it but
it    Network Wizards
   PO Box 343
   Menlo Park, CA  94026

   (415) 326-2060
 
   info@nw.com
   {ames,decwrl,pyramid,sun,uunet}!fernwood!nw!info
sounds similar to the above unit.

|> From: Paul Kooros <kooros@anchor.cs.colorado.edu>
|>
|> Hi, I thought you might be interested in a gizmo I make called
|> /dev/thermometer.  It is a thermometer on a serial port.
|> Features:
|>	* Fahrenheit temperature sensed to +/- 1 degree.
|>	* RS-232-C interface (25 pin D connector) DCE female type.
|>	* 16 popular baud rates, as well as parity, selections.
|>	* UL-listed AC adapter included.
|>	* Comes with free daemon software to monitor temperature.
|>	* Cost:	$159.00
|>	* 90 Day unconditional money-back guarantee.
|>	* 2 Year Warranty (parts and labor) on manufacturing defects.
|> Hardware description:
|>	/dev/thermometer is plugged into any ordinary RS-232-C port,
|>	and requires only the signals TX, RX, and GND (pins 2,3, and 7)
|>	to communicate.  For each byte it is sent, it returns a byte,
|>	the ASCII value of which is the temperature in degrees Fahrenheit.
|>	For example, if it returns the character 'A' (ASCII value 65),
|>	it is reporting a temperature of 65 degrees.  It senses
|>	the temperature through a sensor located on the device.
|>	/dev/thermometer's case measures 4"x3"x2", approximately.
|>	The case is made from tinted plexiglass, and the sides are open
|>	to provide for airflow over the temperature sensor.
|>	The device was designed with machine rooms in mind, but has
|>	been successful in other applications.
|>
|> For a demonstration of /dev/thermometer from any internet host:
|>		telnet refuge.colorado.edu 451
|> for the outside temperature in Boulder, Colorado.  Or:
|>		telnet chez.berkeley.edu 451
|> for the temperature in a certain wine cellar.
|>
|> If you have any questions or comments, please address them by email to:
|>		kooros@boulder.colorado.edu
|> Or by USMail at:
|>		Paul Kooros
|>		International Gizmo
|>		500 Manhattan Dr. D12
|>		Boulder, CO  80303
|>		(303) 499-7014

I hope that this helps.

Stephen Hansen

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Newsgroups: comp.sys.sun.wanted