The MQ-3 is an alcohol sensor 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. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.
Notes on Blood Alcohol Content (BAC) from Wikipedia.org.
Features:
- 5V DC or AC circuit
- Requires heater voltage
- Operation Temperature: -10 to 70 degrees C
- Heater consumption: less than 750mW
Dimensions:
- 16.8mm diameter
- 9.3 mm height without the pins
See BOB-08891 for the gas sensor carrier board.
WARNING
