Alcohol Sensor – MQ3
This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration
It gives 200 – 1000 as the range. Its value quickly increases when it detects the alcohol. Reset takes longer time
Circuit
| Arduino | Sensor |
| 5V | VCC |
| GND | GND |
| A0 | A0 |
