ESP32
The ultimate guide to setting up ESP32 on Arduino IDE 2.0. This post covers the Board Manager URL, driver installation (CP210x/CH340), and critical permissions for both Windows and Ubuntu Linux users. Fix common connection issues and start coding today.
ESP32
Stop hardcoding Wi-Fi credentials! Learn how to build a professional configuration mode for your ESP32 using the Preferences library and a WebServer.
ESP32
Securing your firmware is critical. In this tutorial, we ditch the public clouds and build a secure, automated Over-the-Air (OTA) update system for the ESP32 using Private GitHub Repositories and Personal Access Tokens.
SIM800L
Learn how to perform remote OTA firmware updates on ESP32 using the SIM800L GSM module (2G). A complete guide to building a Python Flask update server for IoT devices without Wi-Fi coverage.
SIM800L
In Part 5 of the GSM IoT Series, we ditch Wi-Fi and go cellular! Learn how to publish sensor data and control your ESP32 from anywhere in the world using a SIM800L module and MQTT. Includes full code and wiring diagrams.
SIM800L
Does your remote IoT project need accurate time but lacks WiFi? Forget expensive RTC modules! In this tutorial, we use the SIM800L GSM module to fetch precise atomic time from an NTP server over GPRS. Perfect for data logging in the field.
SIM800L
Wi-Fi isn't always an option. In this tutorial, we take our GSM skills to the next level by building a two-way communication system. You'll learn how to make your ESP32 text you automatically and how to query its status from anywhere in the world using simple SMS commands.
SIM800L
Stuck with the dreaded 'fast blink' on your GSM module? 90% of SIM800L issues come down to power. Discover the capacitor hack and the exact voltage settings you need to get your IoT project online, whether you use an ESP32 or Arduino.
Learn MQTT
Are you ready to take your IoT projects to the next level? Moving from a public broker to a private VPS gives you speed, security, and total control. In this guide, we walk through installing Mosquitto, configuring ports, and testing your connection with MQTTX.
Learn MQTT
So, you’ve just deployed a new VPS on Linode, DigitalOcean, or AWS. The IP address is in your inbox, and you are ready to install your MQTT broker or Node.js app. Stop! 🛑 Before you install anything, you need to secure the foundation. A fresh server usually comes with
ESP32
Learn how to perform true over‑the‑air (OTA) updates on ESP32‑based IoT devices anywhere in the world using a public GitHub repository as a free, reliable firmware server. Introduction: The Real OTA Problem in IoT If you’ve ever deployed an ESP32 project in the real world, you
ESP32
If you’ve ever connected a SIM800L to an ESP32 and thought, “Why does this thing reset the moment it finds a network?” — welcome. On paper, GSM modules are simple. In reality, the SIM800L is one of the most misunderstood modules in IoT. Most failures don’t come from code.