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Index:

1. 🐍 Explain about exception handling Python packages?
2. 📁 Explain in detail python file handles?
3. 📌 What is the use of GPIO pins in a IoT device?
4. 📌 💡 Illustrate how to interface a LED to raspberry pi and write a program to blink.
5. 🔌 Illustrate how to interface a switch to raspberry pi?

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Q: Explain about exception handling Python packages?
KeyPoints:

• Exception handling in Python is done using try, except, else, and finally blocks.
• Python packages like logging and traceback help in managing errors and debugging.
• logging allows tracking errors, warnings, and other runtime events in a structured way.
• traceback provides a stack trace of exceptions for easier debugging.
• Custom exceptions can be created by subclassing the Exception class.

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Chapter 4: IoT Physical Devices and Endpoints

1. Introduction to Raspberry Pi

   • A low-cost, credit-card-sized computer.
   • Widely used for prototyping IoT applications.
   • Capable of running Linux-based operating systems.

2. Interfaces of Raspberry Pi

   • Serial Communication (UART): Used for communication between Raspberry Pi and other devices like sensors or microcontrollers.

• SPI (Serial Peripheral Interface): Facilitates communication with multiple peripheral devices (e.g., sensors, ADCs).

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Unit II: IoT and M2M – Gist

Unit II covers essential concepts related to Machine-to-Machine (M2M) communication, software-defined networking (SDN), network function virtualization (NFV), and the basics of IoT system management using various protocols.

Here’s a breakdown of the key topics:

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1. IoT and M2M (Machine-to-Machine) Communication

• M2M Communication:

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Unit 1 Overview: Introduction to IoT

1. Definition and Characteristics of IoT:

• Internet of Things (IoT) refers to the network of physical devices that are connected to the internet and can communicate and share data with each other.
• Characteristics of IoT include:
  • Connectivity: Devices connect to the internet or local networks.
  • Sensing: Devices can collect data using sensors (temperature, pressure, etc.).
  • Actuation: IoT devices can perform actions based on received data.
  • Automation: Devices can work autonomously, reducing the need for human intervention.
• Scalability: IoT systems can scale to a large number of devices.

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Unit 5: IoT Physical Servers and Cloud Offerings

This unit explores the role of physical servers and cloud platforms in IoT systems, focusing on storage models, communication APIs, web server functionality, and designing RESTful APIs for IoT applications.

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1. Cloud Storage Models

Cloud storage models are integral to IoT, providing scalable and flexible storage solutions for the massive data generated by IoT devices.

1. Public Cloud:

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1. Find First and Last Position of Element in Sorted Array
2. Search in Rotated Sorted Array
3. Peak Index in a Mountain Array
4. Find in Mountain Array
5. Find K Closest Elements

Tricky: Custom Problem — Split Sorted Binary Array