a simple demonstration for WeMos 0.66" OLED Shield using Arduino Processing IDE on WeMos D1 Mini.
You need to install the following library to your Arduino IDE before using this code: https://github.com/sparkfun/SparkFun_Micro_OLED_Arduino_Library
To see more information about WeMos OLED Shield module, please check the following page: https://wiki.wemos.cc/products:d1_mini_shields:oled_shield