Microcontroller Based Automatic Engine Locking System for Drunken Drivers

Abstract: This project presents a novel approach to prevent accidents caused by drunk driving. The proposed system is sufficient, reliable and can be integrated with existing vehicle system. This innovation has the potential to significantly reduce the risk of accidents caused by drunk driving, promoting road safely and responsible driving habits. The system consists of a microcontroller, breathalyzer sensor, relay module, LCD display, motor driver and buzzer. The micro controller processes the sensor data and controls the engine locking system. The system provides a safe and efficient solution to prevent accidents caused by drunken driving. Its accuracy, reliability, and ease of use make it a viable solution for implementation in vehicles.

Keywords: Power supply, Arduino Uno, L293D, LCD, BO motor, Buzzer, MQ3Ⅰ.