UNO R3 Official Box ATMEGA16U2 / UNO+WiFi R3 Original ATMEGA328P Chip CH340G For Arduino UNO Development Board WeMos ESP8266 [xlmodel]-[photo]- Description: It is a customized version of the classic ARDUINO UNO R3 board. Full integration of microcontroller Atmel ATmega328 and IC Wi-Fi ESP8266 with 32 MB flash memory, and USB-TTL converter CH340G on one board. All modules can work together or independently. On the board where the switch of mode of operation with 8 position Switch status and mode selection: 1 2 3 4 5 6 7 8 CH340 connect to ESP8266 (upload sketch) OFF OFF OFF OFF ON ON ON NoUSE CH340 connect to ESP8266 (connect) OFF OFF OFF OFF ON ON OFF NoUSE CH340 connect to ATmega328 (upload sketch) OFF OFF ON ON OFF OFF OFF NoUSE Mega328+ESP8266 ON ON OFF OFF OFF OFF OFF NoUSE All modules work independent OFF OFF OFF OFF OFF OFF OFF NoUSE After choosing the mode of the board can proceed to setting up the IDE It is important that when the ESP8266 module is programming, it is necessary to press the button ESP Reboot To begin open the Arduino IDE programming environment and go to settings Then go to the Tools> Board> Boards Manager In the window that appears, scroll through the list down to the script esp8266 by ESP8266 Community and click. In the lower right corner will be able to select the version of the software, select the version 2.1.0 (the newest) and click the Install button After installation, close the window and go to Tools> Board and see the list of available devices on the chip programming ESP8266 Next, you need to select the card as shown in the picture (Generic ESP8266 module) Select the upload speed - 115200 ==========test sketch=========== void setup() { Serial.begin(115200); pinMode(14,OUTPUT); delay(500); Serial.println("AT+CIPMUX=1"); delay(2000); Serial.println("AT+CIPSERVER=1,5000"); delay(2000); Serial.println("AT+CIPSTO=3600"); delay(2000); } void loop() { while(Serial.available()) { char Rdata; Rdata=Serial.read(); if(Rdata=='A'|Rdata=='a') { digitalWrite(14,HIGH); delay(50); } else if(Rdata=='B'|Rdata=='b') { digitalWrite(14,LOW); delay(10); digitalWrite(14,HIGH); delay(10); digitalWrite(14,LOW); } else { digitalWrite(14,LOW); } } } Model Number: UNO+WiFi-R3-AT328-ESP8266-32MB-CH340G is_customized: Yes Supply Voltage: 6~9V recommind Type: Logic ICs Condition: New MCU: ATmega328 WiFi MCU: ESP8266 USB-converter: CH340G PinOut Uno: Uno R3 UNO+WiFi R3 ATmega328P+ESP8266 (32Mb memory), USB-TTL CH340G. Compatible for Arduino Uno, NodeMCU, WeMos ESP8266 _x000D_