Precautions:
1. The reverse connection of the positive and negative poles of the power supply on the motherboard will cause permanent damage to some of the chips on the board (large current works for a few seconds).
2. There is overcurrent protection at the output of the motor during normal operation. Since the power and current of the module are very large, please do not artificially short the module if the module does not work normally. Once the short circuit, the circuit may be burned and the tube burst, the first wiring test machine, please use a small current and low voltage test, then use high current and high voltage. As this is a bare board module, please pay attention to the insulation of the cable head. It is strictly prohibited that strong voltage touches the board parts.
3. Do not connect the motor that is obviously inconsistent with the voltage, current or power of the drive module to avoid unexplained damage.