IoT and Its Applications Notes
Subject Overview
The second Elective-II option, covering IoT architecture and enabling technologies (wireless sensor networks, cloud, embedded systems), hardware and software components (Arduino, Raspberry Pi, MQTT/
Subject at a glance
3
Units
36
Topics
4
Credits
3
Infographics
Unit-wise Syllabus
3 units — open any unit for detailed topic-wise notes, diagrams and important exam questions
- Architectural overview
- design principles
- IoT applications
- sensing and actuation
- basics of networking
- M2M and IoT technology fundamentals
- wireless sensor networks
- cloud computing
- big data analytics
- communication protocols
- embedded systems
- IoT levels and templates
- data management
- XaaS
- role of cloud in IoT
- security aspects
- Application layer
Smart home, agriculture apps
- Processing layer
Cloud, analytics, storage
- Network layer
Wi-Fi, ZigBee, cellular, gateways
- Perception layer
Sensors and actuators
Study guide
This unit covers IoT architecture and design principles, applications, sensing and actuation, networking basics, M2M, wireless sensor networks, cloud, big data, protocols, embedded systems, IoT levels, data management, XaaS and security. Draw the layers of an IoT system for a smart home.
- Computing platforms (Arduino, Raspberry Pi)
- communication
- sensing and actuation
- I/O interfaces
- programming APIs using Python/Node.js/Arduino
- communication protocols — MQTT
- ZigBee
- Bluetooth
- CoAP
- UDP
- TCP
MQTT
Publish-subscribe over TCP
Lightweight telemetry
CoAP
Request-response over UDP
Constrained devices
ZigBee
Low-power mesh radio
Home and industrial sensors
Bluetooth LE
Short-range, low power
Wearables, phones
Study guide
You study Arduino and Raspberry Pi, communication, sensing and actuation, I/O interfaces, programming with Python, Node.js and Arduino and protocols: MQTT, ZigBee, Bluetooth, CoAP, UDP and TCP. Learn when to use MQTT versus HTTP.
- Solution framework for IoT applications
- device integration
- data acquisition and integration
- unstructured data storage on cloud/local server
- device authentication and authorization
- case studies and mini projects in industrial automation
- transportation
- agriculture
- healthcare and home automation
- 1
Choose sensors and board
Arduino or Raspberry Pi
- 2
Acquire data
- 3
Send to cloud or local server
- 4
Authenticate devices
- 5
Store and analyse
- 6
Visualise and act
Dashboards, alerts, actuators
Study guide
You study the IoT solution framework, device integration, data acquisition, storage, device authentication and case studies in industry, transport, agriculture, healthcare and home automation. Plan a small IoT project with sensors and cloud storage.
Why IoT and Its Applications Matters
IoT connects physical devices to software, with applications in smart cities, agriculture, healthcare and industry, and growing job demand.
How to Prepare for IoT and Its Applications
- Build a simple sensor project with Arduino or Raspberry Pi.
- Learn MQTT and publish sensor data.
- Think about security from the start of a project.
IoT and Its Applications: Frequently Asked Questions
What is MQTT?
MQTT is a lightweight messaging protocol designed for small devices and unreliable networks, widely used in IoT.