We made some change for the second prototype:

• We separated the PCB into two parts: one for the central part with the teensy and HC-05 bluetooth module, and one for the LEDs array.
  The LEDs PCBs can be soldered to each other to double the number of LEDs, so that we can test both 32 and 64 LEDs prototypes.
• The power transmission is now using brushes instead of coils. We hopped that this would fix some troubles we had with the hall sensor not getting enough power, alas, the problem still persists.
• We switched to even smaller LEDs. The SMD 0603 RGB. Probably as small as we can get. This increases the density of the the image.

Some pictures of the new design:

32 LEDs.

64 Leds, by concatenating two 32 LEDs blades together.

For a funny demonstration of the display capacities. We made a software that
can streams a webcam video in real time into the display:

And some rendered images:Don't hesitate to contact us if you have any question.