SparkFun – Alcohol Gas Sensor – MQ-3 – Gas Sensor Breakout Board

SparkFun: SEN-08880

Description: 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. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.

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

SparkFun: BOB-08891

Description: Simple breakout board for the MQ – 3, MQ – 4 and MQ – 6 gas sensors. All you need is VCC at 5V, GND, and a resistor to an ADC, that is it.

Note: This is the PCB only. Sensors listed below.

Dimensions: 16.8mm diameter

Don Luc