Changes/Modifications to Next Revision ECO/Blue Wires 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 Schematic Changes 1)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. 2)Resistor network for matrix'ing motor hall effect sensors to PIC SERVO needs to be resone. It does not accomplish the desired function. 3)Add 0 ohm resistors to allow PWM & enable signals to be matrix'ed to DRV8313 4)Add 0 ohm resistors to allow ENC A & ENC B to be matrixed to PIC SERVO inputs 5)Select 1206 cap for C14 (part in BOM is wrong footprint)