We’ve seen a lot of ESP8266 projects in the past ... If you want to try it yourself, just solder a wire to the RX pin on the device and load up the code from GitHub. This isn’t the first ...

The ESP8266 is an incredible piece of hardware; it’s a WiFi module controllable over a serial port, it’s five freaking dollars, and if that’s not enough, there’s a microcontroller on board.