Lighted Companion Cube

We've all seen various incarnations of weighted companion cubes from Portal, but I thought it would be nice if the cube was a little more than a dead weight. I offer here my take on a more loveable cube, the laser cut Lighted Companion Cube.

The lighted companion cube is completely portable, and gives many hours of light from a set of six standard rechargeable AA NiMH cells tucked away in his over-crowded interior. He has ambient and radiant modules. The radiant side is an array of 25 white LEDs, arranged in four concentric zones (1 x 1 LED and 3 x 8 LEDs) that can be controlled separately. With all four zones on it is very bright! His ambient module consists of a number of RGB (red, green, blue) LEDs. Each color can be controlled separately, allowing the user to set any possible color to reflect/complement their present mood.

The ambient side is also controlled by a charge/discharge circuit. Pressing the Charge button charges an internal 10,000 uF capacitor, which in turn drive