GPIO Pins Explained (Arduino vs ESP32)
GPIO pins seem simple… but they’re not.
In this video, you’ll learn what GPIO pins ACTUALLY are at the hardware level and why understanding this changes everything when working with Arduino and ESP32.
Topics covered:
What GPIO really is (beyond HIGH and LOW)
Input vs Output explained properly
Floating pins and electrical noise
Why GPIO pins are NOT power supplies
Arduino UNO vs ESP32 differences
Voltage levels (5V vs 3.3V)
Pin multiplexing and hardware behavior
Important:
Applying 5V to the wrong ESP32 pin can permanently damage it.
Boards used:
Arduino Uno
ESP32
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#Arduino #ESP32 #Electronics #GPIO #Microcontrollers