Ks0132 keyestudio EASY plug Analog Alcohol Sensor

Keyestudio EASY plug Analog Alcohol Sensor

Introduction

This analog gas sensor - MQ3 is suitable for detecting alcohol. It can be used in a Breath analyzer. Also it has high sensitivity to alcohol and low sensitivity to Benzine.
The sensitivity can be adjusted by a blue potentiometer on the sensor.
Note: this module should be used together with EASY plug control board.

Specification

Connector: Easy plug
Power supply: 5V
Sensor type: Digital and Analog
Simple drive circuit
Stable and long service life
Quick response and High sensitivity

Technical Details

Dimensions: 56mm*20mm*18mm
Weight: 7.5g

Connect It Up

Connect the EASY Plug analog alcohol sensor to control board using an RJ11 cable. Then connect the control board to your PC with a USB cable.

Upload the Code

Below is an example code. Open or drag below code to Mixly Blocks and upload.

What You Should See

Done uploading the code, open the serial monitor and set the baud rate to 9600.
If the sensor detects the alcohol in the air, you should see the value change.

Extension Experiment

Adding LCD Display

Hookup Guide
Connect the EASY Plug alcohol sensor and LCD module to control board using RJ11 cables.

Test Code
Below is an example code. Open or drag below code to Mixly Blocks and upload.

What You Should See

Upload success, you should be able to see the alcohol value is showed on the LCD screen.

If you can’t see the data clearly, you should rotate the potentiometer on the back of LCD display to adjust the backlight.