I'm all over it. Cube will be lit within two weeks of delivery ...now thats up to Stern when I get it.
I have the power source - switch- light here....just waiting on test boards and the inside of the cube specs.
Have est on replacement cube but I have to order 100 so that may not happen.
Biggest thing is keeping the cube balanced where it will not rotate forward due to added weight.
Valve caps are speed sensitive switches that will light once the cube is spinning. Down side to this is the cube has to be spinning fast and the leds would be pointed toward the center of the cube for the switch to work (IMO).
If it all works out mine will flash on impact and stay lit when spinning.
Another thought is to just light it once spinning no response to a straight shot....but that is plan B.