D1 R2 Compatible


10 in stock

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SKU: IOT-ESP8266-WEMOS-D1R2 Categories: , Tags: , , ,


The WeMos D1 R2 Uno based ESP8266 a wireless 802.11 (Wifi) microcontroller development board compatible with the Arduino IDE. It turns the very popular ESP8266 wireless (WiFi) module into a fully fledged development board. The layout of this board is based on a standard Arduino hardware design with similar proportions to the Arduino Uno and Leonardo. It also includes a set of standard Arduino headers which means many existing Arduino shields can be plugged directly into the board (see note below).

The development board also includes a CH340 USB to serial interface giving it the ability to be connected and programmed directly from your computer and requiring only a common micro USB cable ? no additional interface hardware or configuring is required. Once connected to the computer, and drivers have been installed, the WeMos D1 will appear as a standard serial COM port. The WeMos D1 can be programmed directly from the Arduino Integrated Development Environment (IDE) which is freely available for download from the Arduino website (arduino.cc).


  • Uses ESP8266-EX microcontroller
  • Uses CH340 serial interface chip
  • Clock speed : 80MHz and up to 160MHz
  • Operating voltage : 3.3V
  • 4MB Flash memory
  • 9 GPIO pins
  • 1 Analog Inputs (A0)
  • I2C, SPI and UART serial communication configurable
  • Built-in WiFi functionalities


  • Wemos/Lolin official no longer manufacture the D1, the item now on sale is a clone but is identical to the Wemos/Lolin version.
  • This a 3.3V development board and is not compatible with 5V hardware. Please check comparability before purchasing Arduino shields.


Additional information

Weight15 g
Dimensions70 × 55 × 15 mm