Smart Home Automation

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
Arduino Nano C Type V3 ATMEGA328 with Soldered Headers Rs. 608.00
Piezo Buzzer (Big) 6-12V Rs. 45.00
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
LDR Light Sensor Module Rs. 49.00
IR Proximity Sensor Module With Pot Rs. 55.00
Ultrasonic Sensor Module HC-SR04 Rs. 89.00
TowerPro SG90 Mini Servo – 180 degree Rotation – Standard Quality Rs. 179.00
5V 1 Channel Relay Module Rs. 45.00
Soil Moisture Sensor Rs. 75.00
PIR Motion Detector Sensor Module HC-SR501 Rs. 95.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
3–6V R140 DC Motor (High-Speed DIY & Toy Motor) Rs. 49.00
DC Motor Plastic Fan Blade Rs. 19.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
ESP32 WiFi+Bluetooth CP2102 Development Board Rs. 520.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: LCD (generic / unspecified)
Arduino Mega
Flame Sensor
Laser / LiDAR / ToF Sensor
Water Pump / Valve
Pulse / Heart Rate Sensor
Solenoid / Electric Lock
ESP expansion board
Circuit Diagram

Browse all components

How It Works

The Smart Home Automation system operates as a dual-controller hub utilizing an ESP32-S3-BOX-3 and an Arduino Mega 2560 to monitor environmental conditions, secure a perimeter, and control various appliances. Environmental safety is managed through sensors such as the DHT22 for temperature and humidity, MQ-7 and MQ-8 sensors for gas detection, and a flame sensor. When hazards are detected, the system triggers buzzers and LEDs to alert occupants and can activate an exhaust fan or a 5V water pump via relay modules. Perimeter security and physical access are handled by PIR sensors, ultrasonic sensors, IR sensors, limit switches, an LDR and laser setup, and a solenoid lock driven by servo and DC motors. Vital signs and user health monitoring can also be integrated via the Max30102 pulse oximeter components. Data from these diverse inputs are processed by the microcontrollers, displaying information on a 16x2 LCD display, while the ESP32-S3 handles wireless integration to host an asynchronous web server for remote monitoring and appliance control.

Why Build This

Design a comprehensive, multi-sensor IoT node that integrates environmental hazard detection with web-based appliance control for engineering capstone or advanced coursework.

Gain practical experience implementing distributed microcontroller architectures by interfacing peripherals across both Arduino and ESP32 platforms.

Build a functional prototype for automated climate control, smart home security, and industrial environmental monitoring applications.

Real-World Application

Smart home security, automated climate control, industrial environmental monitoring, and fire/gas hazard safety systems.

Skills You'll Learn

Microcontroller communication protocols

asynchronous web server deployment

sensor signal conditioning

relay-based high-power switching

pulse-width modulation motor control

digital and analog input/output interfacing

Safety Precautions

When connecting real appliances (110V/220V AC) to the relay module, ensure the power is unplugged during assembly. Exposed high-voltage wires can be lethal. Use an insulated enclosure for the relay board.

Technology Tags

ESP32

ARDUINO MEGA

IOT

WEB DASHBOARD

RELAYS

SENSORS

SERVO MOTOR

ULTRASONIC SENSOR

NEOPIXEL

SAFETY AUTOMATION

Frequently Asked Questions

Why are there two different microcontrollers used in this project?

The dual-controller setup leverages the Arduino Mega 2560 for its abundant physical input/output pins to handle the large array of sensors and actuators, while the ESP32-S3 provides dedicated Wi-Fi capabilities to host the asynchronous web server.

Can I power all the motors and the 5V water pump directly from the microcontroller boards?

No, inductive loads like DC motors, servo motors, and water pumps draw too much current and should be powered by an external power supply with a common ground to prevent instability or damage to the microcontrollers.

How do I access the web control interface?

Once the ESP32 is programmed using the Arduino IDE and connected to your local Wi-Fi network with the required async web server libraries, you can access the dashboard by entering the ESP32's IP address into a web browser.