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Posted by Jeff on July 5, 2007, 9:38 pm
   I'd like to control ventilation in my house. Say if a room is warmer
than outside that a fan could turn on. Of course that would be dependant
on the season and some other factors like actual temperatures. Add
another room and something else you'd like to do (like the solar air
heater) and this could be a lot of hardware.

  So, it seems to me that what I'd like to do is string up some of those
one wire sensors and have a small dedicated computer handle all the
logic. I could expand or modify that as needed.

   Anyone have any suggestions on getting started with that? Frugal


Posted by Martin Leese on July 5, 2007, 10:08 pm
Jeff wrote:

Take a look a www.phidgets.com.  They sell
sensors and actuators which can be easily
connected to a computer through a USB port.

Martin Leese
E-mail: please@see.Web.for.e-mail.INVALID
Web: http://members.tripod.com/martin_leese/

Posted by DJ on July 6, 2007, 1:00 am

Or the stuff over at X10.com.


Posted by nicksanspam on July 6, 2007, 10:08 am

And the TU System with 128mb ram + 512mb flash + Desktop Linux = $15 from


It uses 15 watts now, and "5 watts soon," they say.

A ventilation control might use 2 $4 TAI 8540A 1-wire temp/RH sensors from
and a $7 DS9490R 1-wire adapter with OWFS as a 1-wire driver and an X10
interface, eg the $9 2414u from http://www.smarthome.com/2414u.html  or
Home Depot with X10 controllers for an AC, a heater, 2 fans and a damper,
eg $1 15 amp AM466s from http://www.x10.com/automation/am466_s.html ,
and bwbasic.

http://www.hobby-boards.com/catalog/index.php?cPath $ has more fun stuff.


Posted by Jack on July 12, 2007, 2:00 pm
 On Jul 6, 3:08 am, nicksans...@ece.villanova.edu wrote:

fromhttp://www.aagelectronica.com/aag/index.html?target=p_2.html  =en-us

Great post!!!

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