Resistor

Why Is a Resistor Necessary? Can we use a jumper wire connect to VCC or GND to…

Internal Pull-Up and Pull-Down

The ESP32 has built-in pull-up and pull-down resistors, which can be enabled in software using the pinMode()…

Connecting a Button to an ESP32

In this chapter, we’ll learn how to connect a button to the ESP32 GPIO pin 22, explore…

GPIO Default State

Before connecting a button to an MCU’s GPIO, we must use a resistor to set up the…

LED Control Panel

We have learned how to display dynamic information using a Web Server. In this project, we will…

Sensor Dashboard

In this project, we will create an ESP32 web server that displays real-time data from a connected…

Hello World

In the ESP32, hosting a web server is straightforward, allowing us to display data from the ESP32,…

WiFi

Code Refactoring

To avoid repeating Wi-Fi connection code, we can abstract the connection process into a separate function and…

WiFi

WiFi Manager

The WiFiManager library simplifies the process of connecting an ESP32 to Wi-Fi networks by creating a captive…