Key Features:
Supplier - Amazon:
1.
add to arduino suite (Preferences/Settings) the
following link to "Additional Boards Manager URLs"
http://arduino.esp8266.com/stable/package_esp8266com_index.json
2.
Select at the "Board Manager" the ESP8266 and install the packages.
The board packages are now downloading and installed to the Arduino suite.
Arduino board setup for WeMos ESP-8266 board to access the OLED module:
OLED display: