ESP32 Easy short tutorial

From wikiluntti

Introduction

My ESP32 is 32WROOM-32

  • Front side

    Front side

  • Back side and connections

    Back side and connections

  • Tx light blinks when serial connection transfers data

    Tx light blinks when serial connection transfers data

Leds:

  • Tx led blinks when transmitting data.

Pull Up Resistors

Pull up resistors are between a digital input pin and the VCC. Two main purposes:

  1. Avoids issues with floating inputs.
  2. The default "ON" state for inputs like buttons and switches which actively pull the pin low. The pull up resistor keeps the circuit reading high until the button grounds the pin.

https://thelinuxcode.com/esp32-pull-up-pins/

Blink

Linux tutorial

Great linux tutorial: https://curiousstuff.eu/post/how-to-blink-the-damn-esp32-built-in-led/

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