MQ-3

The MQ3 gas sensor is alcohol sensor which is used to detect the alcohol concentration on your breath.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.It is suitable for various applications of detecting alcohol at different concentration.It is widely used in domestic alcohol gas alarm, industrial alcohol gas alarm and portable alcohol detector.

Main Content

Air analyzer, Using almost all kinds of MQ sensors

“An air monitor that can measure CO, CO2, H2, CH4, NH3, Alcohol, Bangene, Acetone, Hexane, Toluene, Smoke and Flammable gas concentration. For a long time, I wanted to monitor every component in the air only using low-cost MQ sensors. So …

Tiny Breathalyzer

“Ok I’ll admit it I’m obsessed with making breathalyzers, I made my first one back in 2015 then I made an addon for the ElectroPet and another addon for the ZeroBootSystem. I wanted to make a slimmed down …

Breathalyzer Medallion

“We all have a special friend who needs supervision on a night out. Mine is called Geoffrey, and on his stag weekend it seemed prudent to have an outward display of how much of a liability he was likely to …

Breathalzer Medallion

“We all have a special friend who needs supervision on a night out. Mine is called Geoffrey, and on his stag weekend it seemed prudent to have an outward display of how much of a liability he was likely to …

Safety Device Used in Labs and Kitchen

“This is a safety device which is used in labs and in kitchen.This is an Arduino project which can save many lives. It has a gas sensor which can detect any smoke or gas leaks. An alcohol sensor which …

Breathalyzer With Arduino

“The objective of this project is to build a functional breathalyzer using an Arduino.”

Presenting MQ sensors: low-cost gas and pollution detectors

“Let’s discover a set of low-cost gas and pollution detectors that may be easily accessed from the Arduino World. Detecting and measuring pollution and the main gases (the ones we may come across in our daily life) is always …

Air Quality Monitor - Using a Mobile Phone Package Box

“Hello Friends, Here is another great use of package-boxes that are lying around which otherwise would sadly be thrown away. This is an old Nokia Package-box reused to make an ‘Air Quality Monitor’!! Actually you can make any electronic prototypes …

AirMo - The air quality monitor!

“I want to talk about the global pandemic that’s underway and how we can solve it together. It’s a major health challenge and yet just a few people are talking about it. However, it kills seven million people …

IoT Alcohol Tester

“I wanted to build an alcohol tester IoT to use during a party. I could put it near the door and all my friends could have fun testing their blood alcohol content before leaving the party. I created this project …