Micro SD Card Shield — WEMOS documentation. Docs ». D1 Mini Shields ». Micro SD Card Shield. Edit on GitHub. The anemometer will be a part of a bench of measures that will be added to the wind turbine MPPT regulator. This bench of measures will work with a ESP8266, for its Wi-Fi availability. For the moment, the objective is to find an easy way to implement RS485 on an Arduino Uno, then to adapt it to an ESP8266, the Wemos Lolin D1 mini for instance. Exploring Different Variants of Wemos D1 Boards Before we plunge into the setup process, it's essential to grasp the diversity among Wemos D1 boards. Variants like R1, R2, and MINI are available in the market. While R1 and R2 boards bear a striking resemblance to the Arduino UNO board, the version information isn't explicitly printed on them. There you are! WeMos D1 mini (v2.2.0) Example/Test Sketch Well, now you might like to get and test some example sketch/code to begin the play. Here's how you can do that: Open "File>Examples". In examples of ESP8266 (or in D1_mini_Examples), just select the "Blink" program. FyggWy3.