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.
ESP32
Are you still using HTTP requests to control your IoT devices? If your ESP32 is constantly asking the server "Is there any data for me?" (polling), you might be draining your battery and wasting bandwidth. In this tutorial, we are going to upgrade your skills by switching to