Welcome to IoT Data Flow

This tutorial shows you how data moves from a sensor to a dashboard. We’ll use one simple story: a smart room with a temperature sensor that reports to a cloud dashboard every 10 seconds.

What You’ll Learn

By the end of this tutorial, you’ll be able to:

• ✅ Understand IoT building blocks - device, sensor, gateway, cloud, dashboard
• ✅ Create telemetry messages - turn sensor readings into JSON
• ✅ Choose protocols - know when to use HTTP vs MQTT
• ✅ Build dashboards - see how cloud services display data
• ✅ Handle failures - understand retries, offline buffers, and security basics

Tutorial Structure

This tutorial is divided into 7 interactive pages (about 30 minutes):

1. Intro and Mental Model (4 min) - One sensor, one room, one dashboard
2. Meet the Devices (4 min) - Sensor, actuator, and gateway explained
3. From Sensor to JSON (5 min) - How raw readings become messages
4. Network and Protocols (5 min) - HTTP vs MQTT explained simply
5. Cloud to Dashboard (5 min) - Storing and visualizing data
6. Reliability and Security (4 min) - Handling failures and staying safe
7. Wrap-up and Quiz (3 min) - Test your knowledge and next steps

Interactive Features

Throughout this tutorial, you’ll experience:

• 🎯 Clickable Diagrams - Explore the IoT pipeline step by step
• 🎚️ Live Sliders - See how sensor values become JSON messages
• 🔄 Protocol Switchers - Compare HTTP and MQTT side by side
• 📊 Time Series Charts - Watch data flow into dashboards
• ⚡ Failure Simulators - See how systems handle network problems
• ✅ Knowledge Checks - Test your understanding

Prerequisites

Before starting, you should have:

• Can read simple JSON
• Has seen basic HTTP APIs before
• Basic programming knowledge (JavaScript or Python)

No hardware required. Everything is simulated.

Estimated Time

⏱️ 30 minutes to complete all 7 pages

You can take breaks between pages and resume anytime. Your progress will be tracked as you navigate through the tutorial.

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The Story We’ll Follow

Quick Preview: We have a smart room with a temperature sensor on the wall. Every 10 seconds, it reads the temperature, sends that reading to the cloud, and we see it on a dashboard. Simple, right? But there’s a lot happening between that sensor and your screen.

Why it matters: Understanding this flow helps you build IoT systems, debug problems, and make smart choices about protocols and architecture.

Ready to start? Click the button above to begin your IoT journey!