Alcohol detection and engine locking system using Arduino Uno and MQ3 sensor.

Описание к видео Alcohol detection and engine locking system using Arduino Uno and MQ3 sensor.

Hello friends, in this tutorial I will show you how to make alcohol detection and engine locking system using Arduino uno.


Components used in this tutorial:
 •  Arduino Uno
 • MQ3 alcohol sensor
 • 5v relay
 • BC547 transistor
 • 220ohm ressistors
 • 9v batteries and caps
 • Led
 • Buzzer
 • Mini breadboard

Required tools:
 • Glue gun
 • Soldering iron
 • Wodden board

link for code and circuit: https://drive.google.com/drive/folder...

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