- The board has 6 male pins and 2 double terminals.
- The motors connect to the 2 terminals. In the middle of the male pins are the VCC and GND pins. This is the input voltage for the L9110 chips. Some H-bridges like the L293 and L298 require a logic voltage and a separate voltage for the motors, the L9110 does not.
- You only have to supply it one voltage (between 2.5 and 12V).
- The other 4 pins control the direction and speed of the motors. Pin A-IA and A-IB control motor A, and Pin B-IA and B-IB control motor B.
- To control motor A you set pin A-IA high and pin A-IB low, to change the direction you just set pin A-IA low and pin A-IB high. Same thing for motor B.
- If you want to control the speed of both motors you will need 4 pwm pins. Instead of just setting a pin high you pwm it.
- The board with 2 small dc motors and fed the chip 5V, the output voltage at full pwm was 4.5V.