http://hackaday.com Fresh hacks every day Sun, 12 Feb 2012 06:24:26 +0000 en hourly 1 http://wordpress.com/ http://1.gravatar.com/blavatar/5560f98f805877b0e332f191cb9e0af3?s=96&d=http%3A%2F%2Fs2.wp.com%2Fi%2Fbuttonw-com.png http://hackaday.com http://hackaday.com/2007/10/24/1-wire-thermostat-control/ http://hackaday.com/2007/10/24/1-wire-thermostat-control/#comments Thu, 25 Oct 2007 05:10:00 +0000 Will O'Brien http://hackaday.iheartcashews.com:8181/2007/10/24/1-wire-thermostat-control/ ]]>
For some reason, computer controllable thermostats are pretty freakin’ expensive. I found a reference to a 1-wire thermostat in this(mirror) sample senior project on home automation. It turns out that Dallas Semiconductor put one together a while back as an application for their TINI platform. (web-application server on a chip). The write-up has since vanished from their site, but I found it thatnks to archive.org. The thermostat used to run about $50, and a similar model still seems to be produced. The 1-wire interface is pretty simple – Maxim’s TINI board to control it: not so much. Just using the 1-wire interface with an inexpensive thermostat and controlling from a PC seems pretty viable to me. Just in case, I mirrored the 1-wire interface schematics here.

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