The first problem, the screws had 3 grooves in the head and I had no screw drivers for this, I had to use a small flat head. The base came off first, containing a circuit board with 3 leads connected to some slip rings providing connections to the spinner. Removing the top dome gave me my first look at the spinner, comprising of a frame to hold a top horizontal pcd connecting to two other pcds at each end, one holds 32 RGB Leds and connects via a 8 wire ribbon cable and the other holds 17 light detectors connected via a 18 wire ribbon cable.  The top pcd contains some kind of integrated circuit under a blob of epoxy, there is a labelled USB pinout on the the board, three leads comming from the slip rings, the +5v line is labeled.

The next task is to remove the spinner so I can use a logic analyser to look at the signals going to the leds. There's no obvoius way of removing the spinner, but I could see 3 screws holding the motor cover on, maybe this may release the spinner.  It didnt, I fiddled for a bit, finally giving it a bit of a rip and pulled it away from the main housing. 

I had removed the spinner from the housing but to get it back on I need to feed the slip rings through the slip ring wipers, the motor housing still attached to the spinner made this very difficult. When I eventually got the spinner back on, the device didnt work. I removed it again, there must be a way to remove the spinner from the slip rings inorder to reseat the slip rings, fit the motor cover and then connect the spinner. After much banging and pushing I managed to get the spinner off, assemble the device and got it working again. This is hard to imagine unless you have one, the point Im trying to get across is  taking something apart with the aim of putting back together and have it work can be frustrating but one of the main arts of hacking. 

I disconnected the one of the wires to the motor so I could check which of the other 2 unknown wires was the ground, then proceeded to disconnect the boards from the spinner.  The main pcb is held in place with two screws and both the led and the light detector boards unclip from the spinner.