Before I went on vacation if finished stuffing and soldering three PCBs. I had to use my daughters lego to build a fixture to hold the board while applying the paste to the second side.

I was a bit careless with the squeegee and ended up with far too much paste on the pads. It wasn't much of an issue except on the 0.5mm pitch TQFP processor.  It was solder short central but nothing some solder wick couldn't clean up. The processor also wouldn't recenter on it's own due to the weight and excessive paste; precise manually positioning was essential.

The QFN packages were actually quite easy to solder. The huge thermal pad under the part caused them to almost snap into place when re-flowed. There were some solder shorts though.

Finally, I powered up the boards. No smoke escaped and the LEDs turned on at random. Nice!

I'm not quite sure why they turn on, I would have expected the drivers to default to off at power on. Maybe not.

 The rest is a simple matter of programming.