Bluetooth Enabled Joystick Controller

Amaze your friends and astound your family, when they check out the “HypnoEllipse”, an interactive A/V web app. Build a Bluetooth enabled joystick enclosure, connect it to the web browser, and take turns performing self hypnosis.
This is a Bluetooth connected Joystick, that sends HID (keyboard/mouse) messages to a p5.js sketch, which presents a spinning optical illusion and swirling sound sample.”

Link