The device displays animated GIF pictures on a rotating cylinder. The GIF pictures can be downloaded from a PC via Bluetooth.

Use the Arduino Due to control a large LED flat panel display. And the software to create and solve mazes on it.

A wall of LED where you can spell out messages from the Upside-Down is the best way to impress your friends and to cheat the Demogorgon.

Last year I did an awesome Christmas light show at my school using only a few Arduinos and a program called Vixen Lights.

It's a dimmer switch! Create your own touch interface for controlling your Philips Hue lights using Bare Conductive's conductive paint.

Realtime environment configuration via NDEF records and RFID tags! Just scan to change the text color!