The shield simplifies wiring by bringing out most Arduino pins to terminal blocks and headers. L293D Based Arduino Motor Shield
However, the hardware design is standardized. Below is a compiled for the HW-130 Motor Control Shield.
void loop() // Forward at 70% speed digitalWrite(MOTOR1_DIR, HIGH); analogWrite(MOTOR1_PWM, 179); // 179 = ~70% of 255 delay(2000);
The HW 130 is a clone/derivative of the classic for Arduino Uno, Leonardo, and Mega. It is built around the L293D quadruple half-H driver IC . The "HW" prefix typically denotes a specific PCB layout version manufactured by Chinese OEMs (e.g., HiLetgo, Keyestudio).
The L9110S operates as a standard H-bridge. For a single motor (using A-IA, A-IB):