Project Hub /Security Surveillance & Defense/Intrusion Detection Systems/HestiaGuard - Intelligent Home Assistant

Intermediate

ARDUINO

Project Specific

6 – 12 Hours

Partial Kit

HestiaGuard - Intelligent Home Assistant

HestiaGuard is a distributed smart home safety and energy management system built around ESP32 microcontrollers for environmental monitoring and automated power control.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

ESP32-C3 Development Board with Berg Pins - Unsoldered Rs. 390.00
ESP32 WiFi+Bluetooth CP2102 Development Board Rs. 520.00
5V 1 Channel Relay Module Rs. 45.00
MQ-2 Smoke Sensor Detector Module Rs. 129.00
DHT11 Temperature and Humidity Sensor Module for Arduino Raspberry Pi Rs. 89.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Arduino Leonardo / Micro
Flame Sensor
Current Sensor ACS712
Heat

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How It Works

HestiaGuard operates as a distributed network of microcontrollers designed to monitor home safety parameters and manage power distribution. At the core of the system are the ESP32-S3-BOX-3, ESP32-WROOM, and Arduino Pro Micro boards, which process data from a variety of onboard sensors. Environmental and safety hazards are tracked using a heat/flame sensor, an MQ-2 gas and smoke sensor, and a DHT22 temperature and humidity sensor. These sensors continuously read physical conditions, allowing the ESP32 microcontrollers to detect anomalies such as sudden temperature spikes, smoke, or combustible gas leaks. Additionally, two 30A current sensors monitor electrical load and energy usage across circuits. When an environmental hazard is detected or energy parameters exceed safe thresholds, the system triggers up to four relays to automatically cut power or switch circuit states. The ESP32-S3-BOX-3 drives an interactive local display interface using the LVGL UI Framework, while ESPHome enables seamless integration into broader home automation networks. Programming and firmware flashing are managed through the Arduino IDE. By combining multi-point environmental sensing with high-current switching relays, the system acts autonomously to protect residential spaces from fire and gas hazards while optimizing power management.

Why Build This

Design and implement a distributed, multi-microcontroller IoT network for real-time residential safety and energy monitoring.

Integrate advanced environmental sensors and high-current relays to build an automated emergency response and power cutoff system.

Develop custom user interfaces using the LVGL framework and ESPHome to manage complex smart home automation tasks.

Real-World Application

Smart home safety, fire detection, gas leakage monitoring, and intelligent energy management for residential buildings.

Skills You'll Learn

Microcontroller network architecture

analog and digital sensor integration

high-current relay control

graphical user interface (GUI) development with LVGL

environmental monitoring firmware design

IoT protocol integration using ESPHome

Safety Precautions

Exercise caution when working with AC power relays and mains voltage circuits.

Technology Tags

ESP32

ESP32-S3-BOX

LVGL

ESPHOME

ARDUINO

IOT

SENSORS

RELAYS

SMART HOME

Frequently Asked Questions

Can I use just one ESP32 board instead of multiple microcontrollers?

The system is designed as a distributed network utilizing the ESP32-S3-BOX-3, ESP32-WROOM, and Arduino Pro Micro to handle specific tasks like sensor data acquisition, relay switching, and UI rendering simultaneously.

How do the current sensors interact with the relays?

The 30A current sensors monitor electrical load data, which the microcontrollers analyze. If abnormal electrical currents or environmental hazards are detected, the system can trigger the four relays to isolate power.

What is the purpose of the LVGL UI Framework in this project?

LVGL is used to create an interactive graphical user interface on the ESP32-S3-BOX-3, allowing users to view sensor readings and system statuses locally on a screen.

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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