Originally Posted By: mlord
My current fav among commercially available thermostats is the Filtrete 3M-40 Wifi Thermostat (aka. the CT-30/CT300E Wifi). It sells for about $110 at Home Depot in the USA.

I don't have one, but were I to purchase a new thermostat, that's what I'd get.

Instead, I've decided to just make one that works how I want it to work. An Atmega328p PIC (w/Arduino bootloader), LCD screen, some buttons, a couple of relays, RTC, temperature sensor, and either ethernet or an ElectricImp for remote access and easier programming.

Yeah, I'm weird. smile


Sounds like something we'd do at my work.

Certainly in the UK, most central heating controllers are completely un intuitive, is it really that difficult to design something that operates in a simple and logical manner?

(no in the answer because we did it many years back when my boss needed a new one!)