My First ESP32 Microcontroller

Here is a demo of how a microcontroller works. This is based on an architecture called ESP32 which is new in the microcontroller world.
ESP32 is a new challenger to the hugely popular Arduino architecture used in tens of millions of devices throughout the world.
Like everything in the world of circuits, they get smaller, cheaper and more powerful over time. Arduino is highly entrenched so it's going to be around for a long, long time.