Learn ESP32 with Arduino IDE
(2nd Edition) This is a practical course where you’ll learn how to take the most out of the ESP32 using the Arduino IDE. This is our complete guide to program the …
ESP32-CAM: Display Pictures in Firebase Web App
In this guide, you’ll create a Firebase Web App to display the last picture taken with an ESP32-CAM saved in the Firebase Storage. The Web App also shows the date …
ESP32-CAM Save Picture in Firebase Storage
In this guide, you’ll learn how to take and upload a picture to Firebase Storage using the ESP32-CAM. You’ll create a Firebase project with Storage that allows you to store …
[SOLVED] Could not find a valid BME280 sensor, check wiring!
This is a troubleshooting guide for the BME280 temperature, humidity, and pressure sensor when using ESP32, ESP8266, Arduino, or similar boards. If you get an error message in your Serial …
Year in Review 2021 – Random Nerd Tutorials
We’re reaching the end of 2021. As usual, at the end of the year, we share a summary of what happened throughout the current year on the Random Nerd Tutorials …
ESP32: Create a Wi-Fi Manager (AsyncWebServer library)
In this guide, you’ll create and set up a Wi-Fi Manager with the ESPAsyncWebServer library that you can modify to use with your web server projects or with any project …
What is MQTT and How It Works
In this article, we’re going to introduce you to the MQTT protocol. MQTT stands for Message Queuing Telemetry Transport.
Testing Mosquitto Broker and Client on Raspberry Pi
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. …
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.
Install Raspberry Pi OS, Set Up Wi-Fi, Enable and Connect with SSH
In this tutorial, you’ll learn how to get started with the Raspberry Pi by installing the operating system, setting up Wi-Fi, and enabling and connecting with SSH. You can configure …
ESP32/ESP8266: Firebase Web App to Display Sensor Readings (with Authentication)
In this guide, you’ll create a Firebase Web App to display sensor readings saved on the Firebase Realtime Database. The sensor readings web page is protected with authentication with email …
ESP32/ESP8266 Firebase: Send BME280 Sensor Readings to the Realtime Database
In this guide, you’ll learn how to send BME280 sensor readings to the Firebase Realtime Database using the ESP32 or ESP8266 NodeMCU boards. The ESP board will authenticate as a …
ESP32 NTP Time – Setting Up Timezones and Daylight Saving Time
In this tutorial, you’ll learn how to properly get the time with the ESP32 for your timezone and consider daylight saving time (if that’s the case). The ESP32 will request …
Firebase Web App with the ESP32 and ESP8266 eBook
Firebase Web App with the ESP32 and ESP8266 eBook Build a Firebase Web App to Control Outputs and Monitor Sensors from Anywhere (Includes Login/Logout Authentication) GET THE EBOOK » Build …
ESP8266 NodeMCU Web Server: Display Sensor Readings in Gauges
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 …