STC8G expansion board_2.4G wireless expansion board

STC8G expansion board series - 2.4G wireless communication expansion board. This expansion board uses ESP8266EX as the main control. It has the function of connecting to the 2.4G wireless network to communicate with the STC8G main control board through the cable. The expansion board inputs 3.3V voltage through the cable. Power supply and use serial port communication with the expansion board. At this time, the STC8G main control board should use 3.3V power supply to keep the signal voltage consistent.
 
The cable definition interface is as follows:
 
The expansion board has two IO buttons on the board. When pressed, the IO is at a low level. When writing the program, the falling edge can be used to trigger the interrupt. The pins are as follows:
 
The expansion board main control chip reset button:
 
 
The expansion board burns Recording reserved holes: Please check the ESP8266EX chip burning method by yourself. The cable should be disconnected when burning the chip.