Google Calendar Door SignSo I bought a couple of Spark Cores recently, and they are (from my geeky perspective) the best things ever. Anyone who's been using Arduinos for a while knows that they are a) big and b) expensive. Adding WiFi to that makes it even worse (like £52 worse). Also using the WiFi shield is annoying because most of the time you have to write code that manually sends HTTP headers and stuff like that, wh
