Project # 104 - MQ-3 Alcohol Vapor Sensor, Breathalyzer on Arduino





| Sources for the video tutorial .ardublock |

Scheme:

Program:



| Open in ArduBlock Online |

Components from Aliexpress:

Alcohol sensor

Gas sensor

Flame detector

OLED 128X64

Arduino Uno

Address tape

Bread board

Training set

Potentiometer

Thermistor

Photoresistor

Relay modules

Transistor

L293D

DC Mini motor

Motor TT 130

IRF520

Switch

Expansion board

Power Supply