alcohol sensor / датчик паров спирта

The simplest alcohol sensor with Arduino Uno. Three color and sound indication with RGB and piezosurgery. The vapour of alcohol sensor MQ-3,use the analog input. The amount of alcohol can be judged by the color of the led and the sound. Green little, blue -enough, red breath - many. Me values for ADC can make the device more sensitive. I will be glad to Your comments! If you need code, write! Простейший датчик алкоголя с Arduino Uno. Трёх цветовая и звуковая индикация при помощи RGB и пьезозуммера. Датчик