LPC51U68JBD48 Breakout Board
Oops... I put the wrong URL on the Rev-1 release tag. You can order Rev 1 of this board from OSH Park here: https://oshpark.com/shared_projects/a4fI5XNS (I receive no commission.)
Double-oops, there is no soldermask threaded between the pins of U1 in Rev-1. This flaw is not a show-stopper. It would have been nice to have.
This has been fixed by reducing the solder mask expansion in Rev 1.1 to 1.8 mils.