Design of an Arduino alcohol tester

In this project, I'll show you how the Arduino connects to the alcohol detection sensor. Here, I have designed an Arduino Shield circuit board using the Easyeda online PCB designer. The Arduino Alcohol Analyzer detects the amount of alcohol in the breath, and then, by some calculations in the code, we can calculate the amount of alcohol in the breath or blood, and may trigger some alarms. The required Materials

Arduino UNO Development Board
Alcohol tester Arduino Shield expansion Board
Alcohol sensor (MQ3)
10K Resistor
1K Resistor
16x2 LCD Display
10k Pot Potentiometer
LED indicator
OP amp LM358
button

For more information, please refer to the following links: https://www.yiboard.com/thread-803-1-1.html