ESP32 FreeRTOS Mutex – Getting Started (Arduino IDE)
In this guide, you’ll learn how to use a FreeRTOS Mutex with the ESP32 programmed with Arduino IDE. A Mutex (Mutual Exclusion) is a special type of binary semaphore that …
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ESP32 with FreeRTOS: Software Timers/Timer Interrupts (Arduino IDE)
In this guide, you’ll learn how to use software timers (timer interrupts) with the ESP32 using FreeRTOS programming on Arduino IDE. We’ll take a look at auto-reload (periodic) timers and …
ESP32 with FreeRTOS: Getting Started with Semaphores (Arduino IDE)
In this guide, we’ll introduce you to and explain how to use FreeRTOS semaphores with the ESP32, using the Arduino IDE. Semaphores are like signals (or flags) that allow you …
ESP32 with FreeRTOS Queues: Inter-Task Communication (Arduino IDE)
In this guide, you’ll learn how to use FreeRTOS queues for safe and efficient communication between tasks on the ESP32, using the Arduino IDE. Queues allow you to exchange data …
ESP32 with FreeRTOS (Arduino IDE) – Getting Started: Create Tasks
In this tutorial, we’ll introduce the basic concepts of FreeRTOS and show you how to use it with the ESP32 and the Arduino IDE. You’ll learn how to create single …
ESP32 Web Server: Set Timer Schedule (Arduino IDE)
In this project, we’ll build a web server with the ESP32 that allows you to control an LED by scheduling a timer with an ON/OFF action for any period duration …
ESP-IDF: ESP32 Simple Web Server (Serve HTML Page)
This guide shows how to build a simple local web server with the ESP32 programmed with ESP-IDF that serves a simple HTML web page. This web page can then be …
ESP-IDF: ESP32 GPIO Interrupts (Button with Debouncing)
In this guide, you’ll learn how to set ESP32 GPIO interrupts with ESP-IDF (Espressif IoT Development Framework). The ESP32 is a microcontroller that offers several General Purpose Input/Output (GPIO) pins …
Year in Review 2025 – Random Nerd Tutorials
With the beginning of a new year, it is time to share our Year in Review. Every year seems to pass faster than the last, and 2025 was no different. …
ESP-IDF: ESP32 GPIO – Read Analog Input (ADC – Analog to Digital Converter)
In this guide, you’ll learn how to set and read the ESP32 board’s GPIO pins as ADC (Analog to Digital Converter) with ESP-IDF (Espressif IoT Development Framework). The ESP32 is …
How to use ESP32 Dual Core with Arduino IDE
The ESP32 comes with 2 Xtensa 32-bit LX6 microprocessors: core 0 and core 1. So, it is dual core. When we run code on Arduino IDE, by default, it runs on core …
ESP32 GPIO Interrupts with Arduino IDE
Learn how to configure and handle interrupts with the ESP32 board to detect and respond to changes on its input GPIOs. We’ll build a project example using a pushbutton and …
ESP-IDF: ESP32 GPIO – Read Digital Inputs
In this guide, you’ll learn how to set and read the ESP32 board’s GPIO pins as digital inputs with ESP-IDF (Espressif IoT Development Framework). The ESP32 is a microcontroller that …
ESP-IDF: ESP32 GPIO PWM with LEDC (Control LED Brightness)
In this guide, you’ll learn how to control the ESP32 board’s GPIOs using PWM (Pulse Width Modulation) with ESP-IDF (Espressif IoT Development Framework). The ESP32 is a microcontroller that offers …