ESP32 with YX5300/YX6300 MP3 Player (Arduino IDE)
This is a guide on how to interface the YX5300 / YX6300 Serial MP3 Music Player Module with the ESP32 programmed with Arduino IDE. You’ll learn how to wire the …
ESP32: 35 Free Guides for Sensors and Modules
There is a wide variety of sensors, modules, and peripherals compatible with the ESP32 boards. We have tutorials for the most popular components. This article is a compilation of 35 …
Raspberry Pi Pico W: Save Network Credentials on a Separate File (MicroPython)
In this quick guide for the Raspberry Pi Pico W, you’ll learn how to save your network credentials in a separate file saved on the Pico’s filesystem (in addition to …
ESP32 with TM1637 4-Digit LED 7-Segment Display (Arduino IDE)
This is a guide on how to interface the TM1637 4-Digit LED 7-Segment display with the ESP32 programmed with Arduino IDE. You’ll learn how to wire the display to the …
MicroPython: ESP-NOW with ESP32 – Control Multiple Boards (One to Many)
In this guide, you’ll learn how to use ESP-NOW to control multiple ESP32 boards from a single ESP32 main controller (one-to-many setup). Think of it like a remote control that …
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 …
ESP32: Set Up mDNS (Arduino IDE)
Learn how to set up Multicast DNS (mDNS) on your ESP32 programmed with the Arduino IDE. mDNS lets you refer to your ESP32 using a user-friendly name instead of its …
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. …
Raspberry Pi Pico: Handling Files and Directories (MicroPython)
Learn how to handle files and directories with the Raspberry Pi Pico programmed with MicroPython. We’ll cover how to create and perform operations with files and directories saved permanently on …
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 …
MicroPython: HTTP GET Requests with ESP32/ESP8266
Learn how to make HTTP GET Requests with the ESP32 or ESP8266 boards programmed with MicroPython. We’ll first cover the basics of HTTP GET requests, and then, we’ll create and …
Raspberry Pi Pico W: Set a Static IP Address (MicroPython)
Learn how to set a static / fixed IP address for your Raspberry Pi Pico W. When your Pico connects to a network, some routers may assign a different IP …
Getting Started with Raspberry Pi
This article is an introduction to the Raspberry Pi. Learn what a Raspberry Pi is and what you can use it for. Explore its features, set it up, and install …
Install Mosquitto MQTT Broker on Raspberry Pi
In this post explains how to install the Mosquitto Broker on a Raspberry Pi. The broker is primarily responsible for receiving all messages, filtering the messages, decide who is interested in it and then publishing the message to all subscribed clients.