Wemos Arduino

WeMos Development Board

Development Board with Integrated Wi-Fi functionality

WeMos-D1R2 is an ESP8266-12 based WiFi enabled microprocessor unit on an Arduino-UNO footprint. That means the board looks like an UNO. Apparently several shields, sensors and output devices that are manufactured for the Arduino platform will work on the UNO with the added advantage of built-in WiFi.