What is the Internet of Things (IoT)?
A beginner-friendly introduction to IoT, covering what it is, why it matters, and real-world examples.
MQTT Demystified
A fun, complete guide to understanding MQTT and its role in IoT systems. Learn about brokers, topics, QoS, and how MQTT quietly powers the future.
Hello MQTT
Your first steps into real-time IoT messaging with Python and Mosquitto.
Simulate Sensor Data with Python + MQTT
Learn how to publish mock weather data (temp, humidity, pressure) to MQTT. No real sensors required—perfect for testing IoT setups.
Simulating ESP32 + DHT22 with Wokwi
Learn how to run a virtual ESP32 with a DHT22 sensor entirely in your browser, no hardware required! Perfect for rapid IoT prototyping.
ESP32 Ultrasonic Distance Meter
Build a real-world IoT project measuring distances with the HC-SR04 sensor: from Serial Monitor to a web-based UI & MQTT integration.