Something like a cheap automatic thermostat which you can control from your phone.
And maybe a small screen to show the temperature and 2 buttons to change the temperature.
So what do we need:
- Raspberry Pi, maybe the new model for the low energy
- Wifi usb dongle
- 3D printed case
- temperature sensor
- Small screen, something like this, TDCG1060M - VISHAY SEMICONDUCTOR TDCG1060M - DISPLAY, SEVEN SEGMENT, 10MM, GREEN | Newark element14 US
or maybe this one? 1109 - ADAFRUIT INDUSTRIES 1109 - RGB POSITIVE 16X2 LCD + KEYPAD KIT, RASPBERRY PI | Newark element14 US already has buttons implemented, but maybe a bit too expensive
- Buttons, everybody has those laying around
Maybe make it a two parter, one part that is just a simple lower and higher temperature thing-a-ma-jig. And a second part making it accessible through some kind of web interface.
