Learn to interface MQ3 Alcohol Sensor with Arduino along with its working, pinout, calibration, reading analog and digital outputs to create a breathalyzer.

2023年4月5日 · Build an alcohol detector with an MQ3 Sensor & Arduino using this step-by-step guide. Learn to wire the circuit, program the board, and test.

What is an MQ3 Alcohol Sensor? The MQ3 alcohol gas sensor is a module used for detecting alcohol, CH4, benzene, gasoline, hexane, CO, and LPG. It has a sensitive material SnO2 for alcohol gas detection, with lower electrical conductivity in the fresh air.

2024年2月21日 · Today, we are learning the basics of another MQ sensor family, the MQ-3. This sensor is designed for the detection of alcoholic gases in the air surrounding it. Gas sensors are widely used in multiple applications, and they provide information to the other components of …

Structure and configuration of MQ-3 gas sensor is shown as Fig. 1 (Configuration A or B), sensor composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring …

MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. This sensor provides an analog resistive output based on alcohol concentration. When the alcohol gas exist, the sensor’s conductivity gets higher along with the gas concentration rising.

2022年5月9日 · Here we discussed about MQ3 Alcohol Sensor's Pinout, Working Principle, Circuit Diagram, etc. Also you will get to know how to use MQ3 sensor with Arduino to detect alcohol

In this tutorial, we will be interfacing Gas Sensors MQ2, MQ3, MQ7, and MQ135 Gas Sensor With Arduino board to build a gas leakage detector. The gas sensor is a widely used sensor for detecting a number of gases, including carbon monoxide and methane gas.

2023年6月19日 · How Does the MQ3 Alcohol Sensor Work? The MQ3 alcohol sensor operates based on the principle of gas sensing using a SnO2 (Tin Dioxide) semiconductor layer. When the sensor is heated to a high temperature, oxygen molecules are adsorbed onto the surface of the SnO2 particles.

2024年7月11日 · In this tutorial, we will learn how to use the MQ3 alcohol sensor with Arduino. With this sensor, we can measure the alcohol level in the air. Also, this MQ3 sensor can be used mainly to create projects to get the level of alcohol in the human body.