... and provides a 5V output interface can 5V single-chip circuitry to supply, support 3.3VMCU control ... 11 Other functions: control the direction indicator, power indicator, current detection, the logic part of the ... board to take power interface. Module wiring: IN1-IN4 connected microcontroller, ... , the +5 output, easy to 5V single-chip power supply, when the VCC voltage is less than ...