Rui Santos 
In this project, you’ll build an ESP32 or ESP8266 client that makes an HTTP POST request to a PHP script to insert data (sensor readings) into a MySQL database. You’ll …
Learn how to install Mosquitto Broker for MQTT communication on a Linux Ubuntu VM (Virtual Machine) using Digital Ocean. Running an MQTT Mosquitto Broker in the cloud allows you to …
Build Web Servers with ESP32 and ESP8266 eBook (3rd Edition) Build Web Server projects with the ESP32 and ESP8266 boards to control outputs and monitor sensors remotely. Learn HTML, CSS, …
Get started with Node-RED on the Raspberry Pi. Node-RED is a powerful open-source tool for visual programming to build Internet of Things (IoT) applications. In this tutorial, we’ll cover what …
In this article, we’re going to introduce you to the MQTT protocol. MQTT stands for Message Queuing Telemetry Transport.
In this tutorial, you’re going to test the Mosquitto MQTT Broker and MQTT Client on a Raspberry Pi. You’ll subscribe the MQTT client to an MQTT topic and publish sample messages. …
Learn how to build a web server with the ESP8266 NodeMCU to display sensor readings in gauges. As an example, we’ll display temperature and humidity from a BME280 sensor in …
In this guide, you’ll learn how to create a web server with the ESP8266 NodeMCU board that displays a web page to control a stepper motor. The web page allows …
In this project, you’re going to monitor the status of a door using an ESP32 board and a magnetic reed switch. You’ll receive an email notification whenever the door changes state: opened or …
In this project, you’re going to monitor the status of a door using an ESP8266 NodeMCU board and a magnetic reed switch. You’ll receive an email notification whenever the door changes state: opened …
In this guide, you’ll learn how to control a stepper motor with the ESP8266 NodeMCU board. We’ll use the 28BYJ-48 unipolar stepper motor with the ULN2003 motor driver. We’ll program …
In this guide, you’ll learn how to create and use a web-based “Serial Monitor” for your ESP8266 NodeMCU projects using the WebSerial library. This creates a web-based interface to output …
This guide shows how to use the HC-SR04 Ultrasonic Sensor with the ESP8266 NodeMCU board using the Arduino core. The ultrasonic sensor uses sonar to determine the distance to an …
This article is a guide about the Ultrasonic Sensor HC-SR04. We’ll explain how it works, show you some of its features and share an Arduino project example you can follow …