PCB v3.3a

Posted by Seth on Feb 14, 2016; 1:30am
URL: http://bluesaab-forum.90.s1.nabble.com/PCB-v3-3a-tp222.html

https://oshpark.com/shared_projects/fXRUAxSj

Updates in this pcb from 3.2:
- added exposed ground layer around border to top and bottom to hopefully prevent ESD issues.
- added dedicated pin and resistor/capacitor from 328 to rn52 power enable pin to allow power down of Bluetooth for future power savings (not implemented yet).
- added lots of silkscreen labeling.
- added jumper to force 9600 baud instead of 115200.
- board size is now almost *exactly* 62mm square (2.44").
- added resistor divider network to allow software to identify which rev of hardware is being used (not implemented yet).