Fire Alarm System with Arduino Nano

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Published: Oct 08,2024

Fire Alarm System with Arduino Nano

Learning project with Arduino Nano and sensors

Attribution-ShareAlike (CC BY-SA)

Hardware Components

I2C 16x2 Arduino LCD Display Module

X 1
Arduino Nano R3

X 1

Tools, APP Software Used etc.

Kicad
Arduino IDE
Arduino

Story

Fire Alarm System with Arduino Nano

Hello!

This is a simple project made with Arduino Nano and some common modules. I used an infrared flame sensor, an MQ-2 smoke / gas sensor, an audible warning buzzer, a relay that could control a sprinkler, a digital display and an On / Off button. As many modules are used for this project, I did not pay too much attention to the positioning of the parts, jump wires are needed.

Note: Pay attention to the polarities, and to the positioning of the flame sensor, normally short leg is connected to a power supply and the long one to ground through a resistor. This is a prototype so changes may occur.

Code