Key features and capabilities of the TB67S109 Stepper Motor Driver Board might include:

Microstepping: Many stepper motor driver boards, including those based on the TB67S109, support microstepping. This allows for finer control and smoother motion of the stepper motor.

Current Regulation: The board often provides mechanisms to regulate the current supplied to the stepper motor. This is important for controlling the motor's torque and heat generation.

Overheat Protection: Some boards include overheat protection features to prevent damage to the motor or driver due to excessive heat buildup.

Step and Direction Control: It typically accepts input signals for step and direction, allowing precise control over the motor's movement.

Compatible Motors: The board is designed to work with specific types and ratings of stepper motors. It's important to match the motor specifications with the capabilities of the driver.