Overview

Objectives: Introduction of IOT

Ultimate IoT Notes

🌐 Ultimate IoT Notes

Definition: IoT (Internet of Things) is a network of physical “things”—devices embedded with sensors, software, and connectivity to exchange data.

  1. Perception Layer: Sensors/devices capture data.
  2. Network Layer: Transports data (Wi-Fi, 5G).
  3. Processing Layer: Cloud/edge analytics.
  4. Application Layer: Delivers IoT services.

  • Sensors: E.g., DHT11, soil moisture sensors.
  • Actuators: Motors, relays.
  • MCUs: ESP32, Arduino.
  • Connectivity: Wi‑Fi, BLE, LoRaWAN.
  • Protocols: MQTT, CoAP, HTTP, Zigbee.

  • Use TLS/SSL encryption.
  • Strong device authentication.
  • Secure OTA firmware updates.
  • Network segmentation and access control.

No dedicated video here, but you can check any security tutorial playlist for deeper insights.

✔️ Smart Home (Light Control)
✔️ Smart Farming (Moisture-based Irrigation)
© 2025 IoT Master Notes • Built for competitive readiness

Reference Book: N/A

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