The main purpose is to facilitate the transition of the ESP8266 module to connected to a PC via the serial port (USB). Note it does not include any ESP modules.
Usb to esp8266 adapter feature:
1. Using CH340 serial chip, stable performance, good compatibility, almost all the Windows system have this driver by default.
2. Adapter board integrated a 1000uF solid capacitor, to ensure that the current supply is stable.
3. Uses a 3225 chip crystal, to enhance the stability of the serial port.
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