Arduino UNO R3 ESP8266 User Manual

2
Control Switch: to control the serial connection between ESP8266 and arduino control board
、
G：GND
5V：5V Power Output
A：connecting to analog port（A0-A3）of arduino control board
UART: connecting to serial communication port（5V GND RX TX）of arduino control board
IIC: connecting to IIC communication port（5V, GND, SDA, SCL）of arduino control board
UART: connecting to serial communication port（3.3V, GND, RX, TX）of ESP8266 module
OTH

Arduino UNO R3 ESP8266 Specifications

General

Brand	Arduino
Model	UNO R3 ESP8266
Category	Server
Language	English