Gravity MQ3 Alcohol Sensor Module – Analog Interface

While one or two relaxing drinks with friends seem harmless, South Africans know to be careful of the restrictions when driving. Police patrols often keep breathalysers, but nothing stops us from keeping our own to check our alcohol levels before climbing into the driver’s seat. This Gravity MQ3 Alcohol Gas Sensor measures alcohol concentrations in the air or on your breath. Designed with an easy gravity analog interface, the module supports Arduino micocontrollers, allowing you to create your own breathalyser or smart detector.

The Gravity MQ3 Alcohol Gas Sensor features a MQ3 probe with high sensitivity to detect Alcohol but low sensitivity for benzine detection. An onboard potentiometer can adjust the sensitivity of the module. Typically, Makers connect LED lights or a small display to read the alcohol levels detected. A microcontroller like Arduino Uno can also turn your project into a smart device with voice alerts and wireless connection that sends notifications to your phone. The low 5V power supply requirement allows you to experiment with various small device applications. These features, in conjunction with the long lifespan of materials used to build the MQ3 Alcohol Gas Sensor, make it an excellent investment for anyone who might be concerned with your intoxication levels after a night out or those of a driver of a company vehicle.

Additional Resources:

• For more insights and specifics on this awesome sensor module, and to find some handy resources like connection diagrams and example codes, check out the official DFRobot MQ3 Alcohol Sensor Module Wiki.

As self-proclaimed “Robo-holics”, DFRobot is a company comprised of over 100 staff members, of which 30% are engineers who love to build robots. It was started in 2008 with the goal of embracing and promoting open-source hardware, with a core focus on Arduino, Raspberry Pi and their very own LattePanda development boards. Since then, DFRobot have manufactured over 1300 unique modules, sensors and components that all work together and complement each other, allowing users like us to enjoy a full spectrum of cutting edge robotics and electronics without having to pay premium prices.

With the primary goal of developing and manufacturing great quality products, while making them accessible to as many people as possible, DFRobot are rapidly becoming one of the most common-place brands in the world of open-source robotics and electronics. With more than 1300 products developed in-house, and an impressive range of different categories and specialisations, there are few brands in the world who can compete in terms of quality, accessibility and genuine innovation.