Arduino-er: Blink NodeMCU on-board LED using Arduino IDE with ESP8266 core for Arduino, and more examples
GitHub - kiranshashiny/Wemos-D1-mini-Blink-LED: This is my first blog on WEMOS D1 mini, and what were the various parameters like board manager etc are listed here.
How to blink a D1 Mini onboard LED (Mac, 7 Steps) – desertbot.io