[jarekh3]

Wiki:

Code:

WeMos D1 R2 & mini isn't listed in my list of available boards. How do I add it?
In your Arduino IDE:

Open Preferences window.
Paste this URL into the Additional Board Manager URLs field:
http://arduino.esp8266.com/stable/package_esp8266com_index.json
After installation, you should have many new types of boards available, including the WeMos D1 R2 & mini

Arduino: 1.8.8 (Linux), Board: "Arduino/Genuino Uno"-  > Lolin(wemos) R1 D2 mini