HAMqtt Device

Abstract

1. Introduction

A simple library that allow an easy json generation of MQTT Discovery payloads intended to be sent to Home Assistant.

This library is quite simple, it only helps to generate json payload, the communication part is not embeded into it.

So, first you need to create your MQTT Discovery device.

2. Objective

A library that provides tools to simplify MQTT discovery implementation for Home Assistant to your device.

This project demonstrates how C++, Arduino 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.

• Arduino IDE / PlatformIO or a C++ compiler (g++)
• Target board (e.g. Arduino, ESP32) where applicable
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/plapointe6/HAMqttDevice.git
cd HAMqttDevice

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 plapointe6 and published on GitHub under the GNU General Public License v3.0. Please follow the license terms and credit the original author when you use or modify this code.