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...where a bunch of geeks got together to make other people's ideas come to life.
This breakout board from Pololu is designed to work with any of the MQ-series gas sensors, simplifying the interface from 6 to 3 pins ground , +5V VCC , and an analog voltage output that are broken out with a 0.1" spacing, making the board compatible with 0.1" headers and standard breadboards and perfboards.
This board has two mounting holes and provides convenient pads for mounting the gas sensor’s required sensitivity-setting resistor (referred to as RL in the sensor datasheet). All of the board’s traces are on the same side of the PCB, making it easy to see how the pads are connected. The first two pictures are for demonstration only, actual sensors sold separately.
The two mounting holes are intended to be used with #2 screws (not included).