The ultimate shield for making your Arduino UNO 4WD car.
Comes with  two TB6612FNG chips to drive and four DC motors.
It comes with a PCA9685 chip(IIC address:0x47) which can output 16 channel PWM output, 8 of which is intend for controlling rotation speed and direction of 4 motors, the another 8 PWM output is led to by 3pin head of 2.54mm pitch and control other devices like servo motor.
The driver board extends the UNO R3 control board’s D11, D10, D9, D5/D4/D3/D2/A3 pins into a 3-pin head with a 2.54mm pitch. The 4-pin head connects to an I2C communication port, and the 4-pin female header connects to a serial communication port.
Power supply IC is LM2596S-5.0, with massive loading capacity, maximum current can reach 3A and drive multiple servos.
Ebs –
Purchased on of these, very good
Can control four wheels, and several servos at the same time connect to multiple sensors.
It extends functions of Arduino Uno beyond imagination