D-

B+

M+

M-

RPWM

LPWM

R-EN

L-EN

GND

VCC

IOREF RESET 3.3V 5V GND VIN A0 A1 A2 A3 A4 A5

13 12 11 10 9 8 7 6 5 4 3 2 1 0 GND

A1 A0 SDA SCL

VIN+ VIN- GND VS

VCC GND SDA SCL