Feature: 1. MOTOR SPEED DETECTION: The driver records the motor rotation speed by detecting the pulse output signal or back electromotive force (non inductive) of the built in Hall sensor in the motor. 2. MOTOR CLOSED LOOP CONTROL(STABLE SPEED): In Hall mode, Hall signal is used to detect speed, and PID adjustment algorithm is used for closed loop control. In Hall free mode, the back electromotive force is used to detect the speed, and the PID adjustment algorithm is used for closed loop control. 3. MOTOR OPEN LOOP CONTROL: In Hall mode, use Hall signal to detect speed and perform open loop control (constant output drive PWM). In Hall free mode, use back electromotive force to detect speed and perform open loop control (constant output drive PWM). 4. MOTOR ACCELERATION AND DECELERATION CONTROL: During the process of starting, stopping, and changing the operating speed of the motor, the speed of the motor will be accurately controlled according to the user's requirements for slow start and slow stop, achieving smoothly starting, stopping, acceleration and deceleration of the motor, reducing the impact on transmission mechanical equipment, and preventing excessive starting current. 5. MOTOR BRAKING CONTROL: In Hall mode, reverse braking (regenerative braking) is used, and the driver quickly reverses the braking to achieve emergency braking effect. In Hall free mode, energy consumption braking is adopted, and the driver automatically controls the braking current to avoid damage to the motor and driver caused by excessive current. 6. MOTOR COMMUTATION CONTROL: The process of switching between forward and reverse directions of the motor. The driver first decelerates to below 10RPM according to the set acceleration and deceleration requirements before switching directions, ensuring smoothly and fast commutation. Frequent commutation will not cause damage to the driver or motor. 7. MOTOR OVERLOAD AND LOCKED ROTOR PROTECTION: In order to fully utilize the performance of the motor, the driver allows the motor to be overloaded to a certain extent. The overload protection value is determined based on the set rated current, effectively protecting the motor. 8. INTERNAL INTERFERENCE SUPPRESSION: In order to ensure the accuracy of motor circuit current measurement, the driving circuit and control circuit are coupled through interference attenuation and consumption, as well as transient interference suppression, effectively ensuring that the control circuit is not affected by the interference of the driving circuit. Specification: Item Type: Brushless Motor Driver Board Controller Mode: MSSD 8LLA Material: PCB Main function: Open loop, PID controller three closed loop speed regulation Current: 8A Voltage: 9V-36V Drive Mode: Square wave Control Mode: 485 communication, analog quantity, PWM, aircraft model PWM, joystick, internal, external potentiometer Sensor: None, Hall Principle Overview: This driver adopts square wave control (also known as trapezoidal wave control or 6-step commutation control), which can drive and control brushless motors with and without Hall sensors. It can accurately detect current and speed, perform speed loop PI closed-loop control and open loop control, and achieve motor acceleration, deceleration, and stable speed control. Among them, the inductive drive control adopts the four quadrant control method, which can generate braking force opposite to the direction of rotation, and does not stall when going downhill or lifting heavy objects; Senseless driving adopts a two quadrant control method. Functional Features: Closed Loop Control: 1. Potentiometer (built in or external), Analog Speed Control: Adjust the stable speed target of the motor by rotating the potentiometer or adjusting the analog voltage. 2. PWM Speed Control: Adjust the stable speed target of the motor through PWM duty cycle. 3. Aircraft Model PWM Speed Control: Control the stable speed and direction of the motor through the aircraft model PWM pulse width time. 4. Rocker Speed Control: Control the stable speed and direction of the motor through the voltage of the joystick. 5. 485 RTU Communication Speed Control: By sending speed targets through 485 communication, the driver will automatically stabilize at the target speed. Open Loop Control: 1. Potentiometer (built in or external), Analog Control: Adjust the PWM size of the motor drive by rotating the potentiometer or adjusting the analog voltage. 2. PWM Control: Adjust the stable driving PWM size of the motor through the PWM duty cycle. 3. Aircraft Model PWM control: The driving PWM size and direction of the motor are controlled through the aircraft model PWM pulse width time. 4. Rocker Control: Control the driving PWM size and direction of the motor through the rocker voltage. 5. 4