Although most of the time my schedule is fairly predictable, every couple days I'll shift things around and come home from the pool (or directly from work) at a different time of the evening.  This, unfortunately, prevents me from creating an accurate program on my thermostat to manage the HVAC system in my condo.

I've been searching around for a decent Wi-Fi thermostat for awhile, now.  I'd like to be able to control the heating and air conditioning remotely.  My requirements appear simple, but apparently they're not:

• 802.11b connectivity with WPA2 (PSK) authentication support
• Decent web interface (that runs on the thermostat)
• Basic program support (day, night, weekend, weekday, etc.)
• NTP support
• SNMP support (and the ability to poll current temperature, desired temperature, and system status)
• Syslog support (not needed if SNMP traps are supported)
• IPv6 support (ha ha ha ha - I'm joking, but wouldn't this be grand?)

I can't find anything that meets even half of these requirements!

The best I've seen so far both look really nice and sport some good features, but require management of the thermostat via a web interface running on the manufacturer's servers.  Yeah, this means that all the thermostat does is create an outgoing connection to some external server and wait to receive commands.  Become a statistic and give some external party access to the HVAC system and current temperature of my condo?  No thanks!  I want something that I can manage directly via my local network (or VPN).

So, right off the bat, these get bumped from the list:

• Intwine Connected Thermostats (IECT210 & IECT220)
• ecobee Smart Thermostat
• Carrier Infinity Control

Some of the above (I'm looking at YOU, Carrier!) even charge a recurring fee for access to the web portal functionality.  Despicable!

Any ideas?  Am I going to have to build my own with a microcontroller?

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