Wiring Instructions
- VCC: Power supply (3.3-5V)
- GND: Ground
- TXD: module serial port transmission pin (TTL level, can not be directly connected to RS232 level), can be connected to the RXD of the microcontroller
- RXD: module serial port receiving pin (TTL level, can not be directly connected to RS232 level), can be connected to the TXD of the single chip microcomputer
- PPX: clock pulse output angle
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