Year in Review 2022 – Random Nerd Tutorials
The new year is just around the corner. This means it’s time for a Year in Review. We’ll share with you a summary of what happened throughout 2022 on the …
Send SMS with the ESP32 (Twilio)
This guide shows how to send SMS with the ESP32 using an online service called Twilio. With this service, you can send SMS with the ESP32 without needing a GSM …
ESP32 HTTPS Requests (Arduino IDE)
In this guide, you’ll learn how to make HTTPS requests with the ESP32. We’ll introduce you to some HTTPS fundamental concepts and provide several examples (with and without certificates) using …
ESP32/ESP8266 with HTTPS and SSL/TLS Encryption: Basic Concepts
This article is a quick and simple introduction to HTTPS and SSL/TLS encryption with the ESP32 and ESP8266 NodeMCU board. We’ll take a look at some concepts and terms that …
Node-RED: Send Email Notifications
This quick guide shows how to easily send emails with Node-RED. This can be a useful feature to incorporate into your home automation system for many applications. For example, to …
Node-RED: Send Messages to WhatsApp
Learn how to send messages to your WhatsApp account with Node-RED. This can be a great addition to your Node-RED automation system. For example, to send notifications with sensor readings, …
ESP8266 NodeMCU: Send Messages to WhatsApp
In this guide, you’ll learn how to send messages to your WhatsApp account with the ESP8266 NodeMCU board. This can be useful to receive notifications from the ESP8266 with sensor …
ESP32: Send Messages to WhatsApp
In this guide, you’ll learn how to send messages to your WhatsApp account with the ESP32. This can be useful to receive notifications from the ESP32 with sensor readings, alert …
ESP32 Wireless Communication Protocols
The ESP32 supports several different wireless communication protocols. Each protocol has its advantages and disadvantages and one can be more suitable than the other depending on the application. This guide …
ESP32: ESP-NOW Encrypted Messages
In this guide, you’ll learn how to encrypt ESP-NOW messages exchanged between ESP32 boards. ESP-NOW uses the CCMP method for encryption using a Primary Master Key (PMK) and Local Master …
ESP-NOW: Auto-pairing for ESP32/ESP8266 with Bidirectional Communication and Web Server
This guide shows how to build an ESP32 web server and use ESP-NOW communication protocol simultaneously. We’ll show you how to establish a two-way communication between the master (web server) …
LILYGO T-SIM7000G ESP32: Get GPS Data (Latitude, Longitude, Altitude, and more)
In this quick guide, you’ll learn how to get GPS data with the LILYGO T-SIM7000G ESP32 board using Arduino IDE. This tutorial is also compatible with a “regular” ESP32 connected …
Getting Started with LILYGO T-SIM7000G ESP32 (LTE, GPRS, and GPS)
Get started with the ESP32 and the SIM7000G LTE/GPS/GPRS module. Throughout this tutorial, we’ll use the LILYGO T-SIM7000G ESP32 board that combines the ESP32 chip, the SIM7000G module, microSD card …
ESP32: Getting Started with Deta Base (Unlimited and Free Database for Developers)
Get started with Deta Base using the ESP32 board. Deta Base is a NoSQL database. It is unlimited, free, and easy to use. Additionally, it requires minimal setup. So, it’s …