

Pololu MQ Gas Sensor Carrier
This carrier board is designed to work with any of the MQ-series gas sensors, simplifying the interface from 6 to 3 pins—ground, power and 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.
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This breakout board 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 two mounting holes are intended to be used with #2 screws (not included).
Note that we also offer an alternate gas sensor breakout board that is more compact, with a diameter equal to that of the smaller gas sensor and the broken-out pins beneath the sensor.
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Connect VCC to 5 V, GND to ground, and OUT to an analog-to-digital converter (ADC). The board has two pairs through-hole pins for the required (but not included) sensitivity-selecting resistor RL, providing two mounting options—horizontal or vertical—between GND and OUT as shown in the pictures below. The resistance of RL should be calculated using the datasheet for your particular gas sensor.
The MQ gas sensors have light to no polarity, so the gas sensor will work with the board all four ways it fits into the 6 pins (there are two possible orientations on each side of the board).
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The picture to the right above shows a board with a 3×1 0.1" right-angle male header soldered to it, which allows a standard servo cable to be used to connect the board to your project.
Note: This product consists of the PCB by itself; it does not include a gas sensor, sensitivity resistor, header pins, or any additional hardware.
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
The MQ-2 sensor allows the measurement of gas concentrations such as propane, butane, methane, LPG as well as alcohol and smoke. Sensor measuring range: up to 10,000 ppm
The MQ-3 sensor allows you to measure the concentration of alcohol vapors. The measuring range of the sensor is in the range of 0.05 mg / L to 10mg / L, and an analogue signal is obtained at the output.
The MQ-4 sensor allows methane concentration measurement. The measuring range of the sensor reaches up to 10,000 ppm and an analogue signal is obtained at the output.
The MQ-7 sensor allows you to measure the concentration of carbon monoxide (carbon monoxide). The measuring range of the sensor is in the range of 10 - 10,000 ppm
The MQ-5 sensor allows the measurement of alcohol and gas concentrations, such as methane, LPG, and carbon monoxide. Sensor measuring range: up to 10,000 ppm
Module with sensors of environmental parameters. It allows you to measure temperature, humidity and pressure as well as CO2 and VOC concentration. DFRobot SEN0335
The MQ-4 sensor allows methane concentration measurement. The measuring range of the sensor reaches up to 10,000 ppm and an analogue signal is obtained at the output.
Adapter for MQ gas sensor with potentiometer for analog signal calibration. MOD 72
Module with BME680 sensor to measure the concentration of volatile organic compounds, pressure, temperature and humidity. It communicates via the I2C interface. Pimoroni PIM357
Module with nitrogen dioxide sensor made in MEMS technology. It allows gas detection in the range of 0.1 to 10 ppm and has an analog output. DFRobot SEN0574
Module with Sensirion SCD30 sensor, which enables CO2, temperature and humidity measurement. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 101020634
Module with a CO2 sensor based on the XENSIV PAS CO2 system from Infineon. It enables precise measurement of CO2 concentration in ppm via I2C, UART and PWM interfaces. SparkFun SEN-2295
No product available!
Module with an analog MQ6 propane sensor. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0131
Module with the alcohol sensor MQ303A. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020044
I2C BME680 Environmental Sensor is a gas, pressure, temperature and humidity sensor in one MEMS housing. The module is supplied with 3.3-5V, for communication the I2C or SPI interface is used. DFRobot SEN0248
A sensor that detects the concentration of phosphine. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0476
No product available!
Air quality sensor module based on the ENS160 system. It communicates via the I2C or SPI interface. DFRobot SEN0515
Module with BME680 for measuring the concentration of VOC, pressure, temperature and humidity. Equipped with a STEMMA QT connector, it communicates via I2C or SPI. Adafruit 3660
Module with an ozone detection sensor that performs measurements in the range of up to 10 ppm with a resolution of 0.01 ppm. The module is equipped with an I2C interface. DFRobot SEN0321
No product available!
Module with ethanol sensor made in MEMS technology. It allows gas detection in the range of 1 to 500 ppm and has an analog output. DFRobot SEN0569
The module with the sensor for the measurement of the concentration of carbon monoxide (MQ-7), allows the measurement of the concentration of carbon (CO) in the air. The module has an analogue output and an output triggered by exceeding the threshold of sensitivity.
Pololu MQ Gas Sensor Carrier