Capteur de CO2 MHz19 Arduino

MQ-7 Carbon Monoxide Sensor Circuit Built with an Arduino

MQ-7 Carbon Monoxide Sensor Circuit Schematic. The carbon monoxide sensor circuit we will build with an MQ-7 sensor integrated with an arduino is shown below. The connections are pretty basic. To connect the sensor, there are 4 leads. 2 of them are for power. The +5V terminal of the sensor connects into the 5V terminal of the arduino board.

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Gravity: Analog CO2 Gas Sensor - MCHobby - Vente de ...

By knowing the exact concentration of CO2(Carbon Dioxide), we can do something to reduce the CO2 and to protect our Earth. Here is the Arduino-based CO2 sensor designed by DFRobot lovely engineer. This is the first CO2 sensor in the Arduino market. The output voltage of the module falls as the concentration of the CO2 increases.

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