As there are two processors incorporated on the board, a greater range of processing power is available.It allows for easy implementation of WiFi communication in Arduino projects.
The different voltage levels are built into the board and become transparent to the User.The Arduino pin out allows for connection of many of the Arduino shields available.It seems that this specific board has several advantages over similar solutions (specifically the WeMos D1 board) If greater range is required, provision is made for connecting an external antenna The board includes a small WiFi antenna.The header pin out is standard Arduino this allows any Arduino compatible shield to be connected to this development board.The Reset button resets both the ESP 8266 and ATMega328.Instead of the large USB connector used on a standard Arduino, this board uses a micro USB connector for serial communication and programming.The board includes a 5V and 3.3 V Voltage regulator to allow for the differing voltage requirements for the ESP8266 and ATMega328.Model Number: UNO+WiFi-R3-AT328-ESP8266-32MB-CH340GĪ description of the components on the board.High level specifications of the board as follows: Before purchasing, make sure that the photograph in this article matches the picture on the selling site. Cost is approximately 10 to 14 USD before shipping. It can be found on eBay, AliExpress, Banggood and other sites. A search for the following text “UNO R3 WIFI ESP8266 ATMEGA328 CH340G” will yield numerous results of sites that sell this particular development board.
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