Coding the WeMos D1 Mini using Arduino IDE - IoT Starters
Wemos Lolin D1 Mini ESP8266 Development Board (HCWEMO0017) - forum.hobbycomponents.com
WeMos D1 Mini Pro ESP8266 Development Board
ESP8266 WeMos D1 MINI ESP-12E IoT WiFi Wireless Board Arduino IDE Compatible - AUSCOM Computers & Controls
Amazon.com: AITRIP D1 Mini WiFi Dev Board,Mini NodeMcu Lua 4M Bytes WLAN WiFi Internet Development Board Base on ESP8266 ESP-12F for Arduino, 100% Compatible with WeMos D1 Mini (Pack of 6) :
D1 Mini V4.0.0 Module Board 3.3V Based ESP8266 4MB for Arduino Ide Programming | eBay