Full integration on one board: Uno R3 ATmega 328 and WiFi ESP8266 with memory 32Mb (MegaByte). All of the modules can work together or each separately. And everyone has their own pinout headers. The convenient solution for the development of new projects requiring Uno and WiFi. Via USB you can update sketches and firmvare for ATmega328 and for ESP8266. For this on board have the USB-serial converter CH340G. Use this board is very simple. The board has DIP-switch, to connect the modules. Driver link:https://wiki.wemos.cc/downloads For example, to: USB and ATmega328, USB and ESP8266, ATmega328 and ESP8266.
Table DIP- switch:
Connection
DIP
1
2
3
4
5
6
7
ATmega328ESP8266
ON
ON
OFF
OFF
OFF
OFF
OFF
USB ATmega328
OFF
OFF
ON
ON
OFF
OFF
OFF
USBESP8266 (Update firmware or sketch)
OFF
OFF
OFF
OFF
ON
ON
ON
USBESP8266 (communication)
OFF
OFF
OFF
OFF
ON
ON
OFF
All independent
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Package included:
1 x UNO+WiFi R3 ATmega328P+ESP8266 32Mb Memory
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