In this instructable, we made a battery powered RGB LED cube. It automatically shifts through colours with the help of a built in microcontroler.
The bottom half of the cube is laser cut and the top half is 3D printed. The cube has a push button on the front and on the side is a DC barrel for charging. Inside is a battery pack consisting of three li-ion batteries powering the 3W LED module as well as the ATTINY85 and the driver circuit.
The purpose of this lamp is primarly decorative, but after the first tests it turned out that the cube actually lit up dark areas pretty well. I will be sure to pack this to my next camping trip and see how it performs.
Note: This project is a collaboration of me and MatejHantabal. He did mainly the design and I did the electronics.”