Pedestal Mock Up
One of the key ideas of the LED Cubular is that once it's assembled it should be chargeable and re-programmable without disassembly. This is why on the bottom board it has a number of exposed pads to allow for this. The pads will touch on pogo pins on a "pedestal" platform that interfaces with the cube. I put together a general mock up of the pedestal and I like the idea of including a neopixel-24 ring within it to give a nice RGB glow around the cube. The cut corner on the cube ensures we get the orientation correct once it's placed on the pedestal. The pedestal will require it's own microcontroller to ensure power is applied only when there's a good connection and should add a level of safety that prevents any damage, kind of like a mac book handshake when plugging in power. This built in microcontroller will also allow reprogramming the cube and manage the neopixel ring as well as some button inputs which may be used to change the active "mode" the cube is in or some other functions.
Some mock up images of where my thoughts are at
Anyone got a 3d printer to spare? :D