Gas Sensor Breakout Board
Cost: $0.95 each
Description: Simple breakout board for the MQ - 3, MQ - 4, MQ - 6 and MQ - 7 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