The project illustrates how an Arduino board was interfaced with MQ-3 Alcohol Gas Sensor to create the Breathalyzer. One ADC input of Arduino is required to obtain the simple connection of the sensor.

A new open source hardware (FOSH) and software (FOSS) system has been created by Inelemento based in Italy to help you exercise your breath and aid meditation and relaxation. The Arduino-based device ...

While handheld breathalyzers are pretty novel to have around while drinking with friends, there’s nothing exciting about a $50 off the shelf unit. If you really want to grab people’s attention, you ...