If you have an old Android phone sitting around collecting dust, and you've been pining for smart thermostat but don't want to drop the cash on one, then the Android Thermostat might be the perfect project for you.


The Android Thermostat is an open source smart thermostat. Using software from the Google Play store, and a handful of parts to build the interface, it can control your heat, set up a schedule, log your usage, and more. You can even control the temperature from afar since the thermostat operates as a server. As with any home heating hacks, you'll want to be careful if you decide to take this one on since it's entirely possible you could mess up you furnace, but if you're up for the challenge head to the link below for a full walkthrough and parts list.

Android Thermostat | via Hack a Day