What if you could get an instant SMS alert the moment a fire or smoke is detected at home or office? Through this project tutorial, you can build a fire and smoke alarm system using Arduino UNO R4 ...

This project is an automated kitchen safety and ventilation system built using an Arduino UNO R3, a DHT22 temperature & humidity sensor, an MQ-2 gas/smoke sensor, and a relay module connected to an AC ...

// Pin Definitions #define MQ2PIN A0 // MQ-2 analog output to Analog Pin A0 #define BUZZER 8 // Buzzer connected to Digital Pin 8 #define LED 9 // LED connected to Digital Pin 9 // Smoke detection ...