Gas sensor breakout board….!!!

This simple GAS Sensor breakout board designed by Tenet Technetronics in such a way that can work with any of the MQ-series gas sensor, like MQ-3, MQ-4, MQ-6, MQ-7, etc gas sensors. This breakout board simplifies the interface from 6 to 4 pins that are broken out with a 0.1″ spacing, making the board compatible with 0.1″ headers to standard breadboards. The board has a diameter of 16.8 mm, which matches the diameter of the small (plastic) gas sensor packages, providing a more convenient, compact connection within the bounds of the sensor itself.

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The two rows of 1 x 2 pins are spaced 0.5″ apart allowing the break out board to work with standard breadboards.

Connections:

Connect H1 and A1 to 5 V, GND to ground, and B1 to an ADC input of your microcontroller. A required (but not included) sensitivity-setting resistor, RL, should be connected between B1 and GND. The resistance of RL should be calculated using the datasheet for your particular gas sensor.

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The MQ gas sensors have light to no polarity, so the gas sensor will work with the board any way it fits into the 6 pins.

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