With the clear PLA, I was going to 'edge light' the petals and try to get a light pipe effect from them.  I also had 12 petals and planned on using 6 modules.  Had I continued on that path (I may still), that would have worked out very nicely, provided I removed them from the strip they came on.  Perhaps if I had the high density ones this would be another story.

The modules I got on hand when removed from the strip are 5x5x2mm, not counting the solder blobs holding them on the strip.  Those extend another 1.5mm or so.  The modules themselves are actually conveniently packaged with DI/CI on one side, and DO/CO on the other.

So... I can make a ring of them just by soldering DO/CO on one directly to DI/CI on the next module, and then hand wiring +5v and ground to all of them.  Sorry Drew, but I really like projects which don't require etching a PCB to get started. Perhaps later... :)

If I just run them at 100% removed from the strip, they are probably going to overheat.  I'll have to limit my total output.

So enough rambling.

The new plan is to still make a ring, but now I will face them out/up at a 45 degree angle.  Instead of edge lighting the petals, I'll light the entire rose for the inside.