IoT experimentation, midi pipe organ pedals and remote controlled passive XLR summer

WOHO!

It's running Espruino and flashing some LEDs :D

Summary of mistakes:

1. Forgot to route NRST....
   
2. Made a silly mistake with one of the decoupling caps (such that I had VDD and GND shorted...
   
3. Missed fine print in USB datasheet about the footprint being from bottom not top so it is mirrored. I fixed it by soldering the connector on vertically (which effectively mirrors the pinout)
   
   

New revision will be ordered before the end of the week, correcting all this.
I've learned a lot so far! Debugging, fine pitch soldering, and SMD reflow and rework. Phew