This Motor drive module itself comes with our-way L9110S chip module which gives supply voltage of 2.5-12V

Features:

•  Suitable motor range: motor working voltage is between 2.5v-12V
• the maximum working current is 0.8A
• the current smart car voltage and current in the market are within this range.4  can drive 4 DC motors at the same time or 2 4-wire 2-phase stepping motors.

Two module interface description

[10P black curved pin instructions]

• 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

[8P PCB terminal block description]

1. MOTOR A is connected to DC motor with 2 pins, no direction
2. MOTOR B is connected to DC motor with 2 pins, no direction
3. MOTOR C  connects DC motor with 2 pins, no direction
4.  MOTOR D  connects DC motor with 2 pins, no direction

Three module instructions  

• Turn on VCC, GND module power indicator is on  
• A1 input high level, A2 input low level, MOTOR A motor forwards
• A1 input low level, A2 input high level, MOTOR A motor reverses
• B1 inputs high level, B2 inputs low level, MOTORB motor rotates forward
• B1 input low level, B2 input high level, MOTOR B motor reverses
• C1 input high level, C2 input low level, MOTOR C motor forwards
• C1 input low level, C2 input high level, MOTOR C motor reversed
• D1 input high level, D2 input low level, MOTOR D motor forward rotation
• D1 input low level, D2 input high level, MOTOR D motor reverses

Package Include:

1XL9110S 4 channel DC motor transmission Smart car engine unit module 4-way controller