Module interface 1. VM: Power supply input for the module, compatible with motor parameters, measured range 7.6~40V 2. VCC: Connect to 5V input; do not use 3.3V, as it may affect performance 3. GND: Ground pin Color: Green Material: PCB + Metal Control example (when the above 3 pins are connected) Task 1: Motor A rotates forward with a duty cycle of 50% Solution: Connect two wires of motor A to AOUT1 and AOUT2; connect AIN1 to low level, AIN2 to 50% PWM Task 2: Motor B rotates in reverse with a duty cycle of 20% Solution: Connect two wires of motor B to BOUT1 and BOUT2; connect BIN1 to high level, BIN2 to 20% PWM Note: If your PWM frequency is relatively high (e.g., 10kHz), two PWM pins are required to control forward and reverse rotation. If using a default PWM frequency of 500Hz, one digital pin and one PWM pin can be used for direction control, though performance may not be as effective as using two PWM pins Specifications: Function: Controls forward and reverse rotation of two motors (e.g., one module suffices for a balancing robot car) Voltage: 7.6~40V Current: Module includes overcurrent protection; maximum output current limited to 2A (will not shut off, only limits current) Control: Requires 4 PWM pins (if no reversal needed, only 2 PWM pins required); simpler to use than L298 Product dimensions: 23 x 18.3mm Pin headers: Dual row, 7-pin each Spacing: 20mm Package Contents: 2 x Motor driver modules Note: The package includes only the items listed above; other products are not included. Lighting and display differences may cause slight variations between the product color in images and actual color. Measurement error allowance: +/- 1-3cm