Detects alcohol vapor in the driver’s breath, providing an analog output proportional to the concentration of alcohol. Arduino Uno Microcontroller: The core processing unit that receives input from ...

Abstract: Drunk driving remains a significant issue worldwide, with thousands of lives lost every year due to accidents caused by individuals operating vehicles under the influence of alcohol. The ...

A low-cost, real-time smoke detection system using MQ2 Gas Sensor, Arduino Uno, and buzzer alerts. Ideal for basic fire hazard prevention and awareness. Designed as an educational project for embedded ...