Pubnub Rpi Smart Parking

Abstract

1. Introduction

Smart Parking System based on Raspberry Pi and PubNub for providing realtime updates on parking availability using the PubNub C-Core SDK.

##OVERVIEW This project demonstrates how we can build an application on Raspberry Pi which can control a set of HC-SR04 ultrasonic sensors,via ATMega8 chip to detect the availability of a parking slot and update this information on a mobile app using the PubNub's realtime data stream network. This application makes use of the new PubNub C-Core SDK on the device side and Javascript client SDK on the mobile app.

##INTRODUCTION This application is assumed to be installed in a public parking space where each parking slot is monitored using a HC-SR04 ultrsonic sensor connected to ATMega8 and ATMega8 connected with a Raspberry Pi via the UART interface.

2. Objective

Smart Parking System based on Raspberry Pi with ATMega8 and HC-SR04

This project demonstrates how Java can be applied to a real-world Internet of Things (IoT) problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• JDK 11 or later
• Maven / Gradle
• IntelliJ IDEA, Eclipse or Android Studio
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/shyampurk/pubnub-rpi-smart-parking.git
cd pubnub-rpi-smart-parking

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add a mobile dashboard using Blynk or Firebase
• Store readings in a cloud database for history charts
• Add alerts via SMS / Telegram when thresholds are crossed

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which microcontroller / board and sensors are used and why?
2. How does the device send data (Wi-Fi, MQTT, HTTP, Bluetooth)?
3. Where is the sensor data stored and visualised?
4. How is power consumption managed?
5. How would you secure the device and its communication?

9. Source Code & License

This project is developed by shyampurk and published on GitHub under the MIT License. Please follow the license terms and credit the original author when you use or modify this code.