Features:
Module supply voltage: 2.5-12V
Suitable for the motor range: motor operating voltage 2.5V-12V
0.8A maximum operating current
Size: 49mm x 36mm

Pinout :
A1 external MCU IO port
A2 external MCU IO port
B1 external MCU IO port
B2 external MCU IO port
C1 external MCU IO port
C2 external MCU IO port
D1 external MCU IO port
D2 external MCU IO port
+ external 2.5 V- 12 V voltage
- External GND
MOTORA is connected to DC motor with 2 pins, no direction
MOTORB is connected to DC motor with 2 pins, no direction
MOTORC connects DC motor with 2 pins, no direction
MOTORD connects DC motor with 2 pins, no direction

Instructions :
Turn on VCC, GND module power indicator is on
A1 input high level, A2 input low level, MOTORA motor forwards;
A1 input low level, A2 input high level, MOTORA motor reverses;
B1 inputs high level, B2 inputs low level, MOTORB motor rotates forward;
B1 input low level, B2 input high level, MOTORB motor reverses;
C1 input high level, C2 input low level, MOTORC motor forwards;
C1 input low level, C2 input high level, MOTORC motor reversed;
D1 input high level, D2 input low level, MOTORD motor forward rotation;
D1 input low level, D2 input high level, MOTORD motor reverses;

Note:
This driver can drive 4 DC motors at the same time, or 2 4-wire 2-phase stepping motors