There are many ways to drive the motor. Our robot uses the most commonly used L298P solution.
L298P is an excellent high-power motor driver IC produced by STMicroelectronics. It can directly drive DC motors, two-phase and four-phase stepping motors. The driving current up to 2A, and the output terminal of motor adopts eight high-speed Schottky diodes as protection.
We have designed the motor driver shield based on the L298P circuit.
The stackable design can make it be plugged directly into the Arduino, reducing the technical difficulty of using and driving the motor.
Direct stack the motor driver shield onto UNO R3 board, after the BAT is powered on, turn the Slide button ON, to supply the power for both OpenELAB motor drivers shield V2 and UNO R3 board. For simple wiring, the motor driver shield comes with anti-reverse PH2.0-2P connectors. When connecting the motors, just plug in directly.
The Bluetooth interface on the motor driver shield is fully compatible with the OpenELAB HM-10 Bluetooth module. When connecting, just plug the HM-10 Bluetooth module into the corresponding interface.
At the same time, the motor drive shield has brought out extra digital and analog ports in 2.54mm pin/female headers, so that you can continue to add other sensors for experiments extension.
The motor drive shield can access to 4 DC motors. And the 8 jumpers can be applied to control the turning direction of 4 motors.
For instance, if change the 2 jumpers near the motor A connector from horizontal connection to vertical connection, the turning direction of motor A is opposite to the original rotation direction.
The L298P motor drive shield comes with three 3mm fixing holes, easy for mounting on other devices.