The maximum Time: FORWARD: 5000s (up to 40,000s through the short pad), stepping 0.1s, REVERSE: 5000s (up to 40,000s by shorting the pad), stepping 0.1s.
Instructions1: VIN is connected to the positive power supply, GND is connected to the negative pole of the working power supply; P+ is connected to the positive pole of the motor power supply, and P- is connected to the negative pole of the motor power supply. M+ is connected to the motor input terminal 1 (the motor does not distinguish between positive and negative poles), and M- is connected to the motor input terminal 2.
Instructions2: After power-on, D1 flashes 3 times and then goes off, goes out, M+ output is positive, M-output is negative, motor rotates forward; after delay T1 time, lights up M+ output negative, M-output is positive, motor reverses; delay After T2 time, is off, M+ output is positive, M-output is negative, motor is rotating forward, and so on.