Lecture Notes on Virtualization and Raspberry Pi Setup

Introduction

• Focus on setting up virtual environments using VirtualBox, VMware, and QEMU.
• Discussion on setting up a Raspberry Pi OS in a virtual environment.

Initial Instructions

• Links provided for necessary downloads.
• Importance of internet speed for downloads emphasized.

Virtual Environment Setup

• VirtualBox Method: Issues with Raspberry Pi crashing at start.
• QEMU: Suitable for Linux users, problematic for Windows users.
• VMware: Download and install VMware workstation for Windows/Linux.
  • Download Raspberry Pi OS (Bullseye version, ~3GB).

Raspberry Pi Installation

• VM configuration with VMware.
  • Importance of selecting Linux as the guest operating system.
  • Debian 11 x64 recommended.
• Allocation of minimum 20GB storage.
• Install Raspberry Pi OS and set up user credentials.

Configuration and Troubleshooting

• Network setup: Use NAT for shared host IP address.
• SSH setup for remote access to the virtual Raspberry Pi.
• Installation of necessary packages like MQTT broker (Mosquitto).

Commands and Configuration

• Updating and Installing Packages:
  • sudo apt update
  • sudo apt upgrade
  • sudo apt install mosquitto
• Enabling Mosquitto service: sudo systemctl enable mosquitto.service
• Configuration file located at etc/mosquitto/conf.d/default.conf
  • Add listener 1883, protocol mqtt, allow_anonymous true

MQTT Setup

• Raspberry Pi as MQTT broker.
• Virtual devices (Python scripts) simulating sensors.
• Gateway on Raspberry Pi, devices on Windows PC.

Troubleshooting

• Network issues: Ensure correct network adapter settings.
• Verification of Mosquitto running using ps aux | grep mosquitto.

Notes on Real-World Application

• Emphasis on data generation by IoT devices for AI and machine learning applications.
• Practical application of IoT in smart environments.

Next Steps

• Implementation of a cloud server to receive data from the Gateway.
• Creation of a small UI for data visualization.

Conclusion

• Summary of setup process and configurations.
• Encouragement to experiment and troubleshoot using provided instructions.