Changes/Modifications to Next Revision

1)Connect J1/11 to J1/13 and J1/12 to J1/14. This ties unused wires on the
MCBH-8 to ground and provides a ground reference for the serial bus

2)The phasing of the encoder is reversed. Cut traces on top of board between
P3/8 and via(1423,1135) and P3/6 and via(1423,1035). Tie P3/8 to U1/5 and
P3/6 to U1/6.

3)\FAULT\ is pulled up to 5V, which causes issues with the "voltage good" logic
in the PIC SERVO firmware. It should be ties to 3.3V output from the DRV8313.
Cut trace on bottom of board from R11 to Vcc. Connect the Vcc side of R11 tp
the 3.3V side of C9

4)The current sensing circuit is totally screwed up. Either add another op amp
with proper gain and current sensing resistor, or fix the way this works with
DRV8313 on-chip comparator.

