Quelltext der Seite ESP8266 Lolin mit Arduino

Wemos D1 mini is a simple wifi board. 
It has 9 digital pins but only 1 analog pin! All of the IO pins run at 3.3V.
Pinout>> https://www.wemos.cc/en/latest/d1/d1_mini_lite.html

=Programming the ESP8266 from the Arduino IDE=

==add link to board manager URL==
To use the Wemos D1 board you have to add link to bard manager URL:

Menu: Preferences --> Additional Boards Manager URLs:
https://arduino.esp8266.com/stable/package_esp8266com_index.json,https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json


==install board==
Menu: Tools --> Boards --> Boards Manager:
search for: D1
Install: "ESP8266" by ESP8266 Community


==choos board and port==
Menu: Tools --> Board: LOLIN(WEMOS) D1 mini ...
Menu: Tools --> Port: COM...



For using ESP8266 with Arduino, you can also use the shifter.io desktop App or any other MQTT Broker.