Arduino Wifi Joystick Controller
I wanted the option to control my Wifi remote-controlled car with a traditional joystick setup, so I made this.
Here is a link to the open-source code for the controller
This remote was built to drive this remote control car. The JSON structure of its commands was intentionally built to be generic, however, so it could be re-used to drive other remote-controlled vehicles without needing to modify/reprogram it.