DFRobot Gravity: Analog CO2 Gas Sensor for Arduino | CO2 Gas Detector

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In this article, we covered the basics of the CO2 sensor from DFRobot, which is abed on the MG-811 gas sensor. If any of you have used these kind of sensors before and have had a positive experience with the sensors you purchased, please let me know the details. d) Connect the sensor bridge to the Arduino using the male-to-male jumper wires as shown in the wiring diagram. print ( "=" ) ; 275 276 int decimals = 1 ; 277 if (i == CO2 ) decimals = 0 ; 278 if (i == RH ) 279 decimals = 2 ; 280 lcd . print ( "=" ) ; 201 int decimals = 1 ; 202 if (i == CO2 ) decimals = 0 ; 203 if (i == RH ) decimals = 2 ; 204 lcd .

timeToString ( ) ; 129 130 for (int i = 0 ; i
Select the COM port where your Arduino is attached, if you don't know, look for it in the Device Manager "COM and LPT ports". h) Using the A – B male/male USB cable, connect the Arduino Uno to your computer and open the Arduino IDE software.

Essentially, I understand you want to acquire the data with the arduino and then recalculate the value using the calibration curve coefficient. When I run another test separate from the this experiment, I note down the Cozir CO2 data and plug it into the calibration equation derived from the data above.It can work on three different communications Protocols: SPI 3 Wire mode, SPI four-wire mode, and I2C mode. The Gravity Analog Infrared CO2 Sensor for Arduino is a high-performance sensor that combines technology of mature infrared absorption gas detection with precision optical circuit design as well as sophisticated circuit design. Notice:The new version of analog sensor port pin mapping has been changed as the following two features. c. Cubic CM1106, is the last option because the distribution in China is for second-hand units and sometimes not available. Because of the heating coil, the sensor can get quite hot, but it's worth it to get more accurate readings.

Indoor Air Quality monitoring – The amount of CO2 in a room is a good indication of how well the room is air-conditioned.To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average.

MQ-135 Gas Sensor is an air quality sensor for detecting a wide range of gases, including NH3, NOx, alcohol, benzene, smoke, and CO2. By knowing the exact concentration of CO2(Carbon Dioxide), we can do something to reduce the CO2 and to protect our Earth. Great and powerful sensor for everyone that wants to know the exact concentration of CO2(Carbon Dioxide) in the air. All these low-cost sensors are calibrated outdoors, placing them in an outdoor space for a few minutes without receiving any direct strong wind because it affects the measurement. Please ensure the analog pin used for the connection is the same as the one used in the Arduino UNO code.By knowing the exact concentration of CO2, we can do somehing to reduce the CO2 and to protect our Earth. println ( "Card failed, or not present" ) ; 72 // don't do anything more: 73 while ( 1 ) ; 74 } 75 Serial . data [Rs ] = calcRs ( readSensor (CO2_sensor ) ) ; //kohm 160 161 data [ CO2 ] = calcCO2 (data [Rs ] ,data [fRHT ] ) ; //ppm 162 163 dataToScreen (labels ,data ,units ) ; 164 165 166 dataToLCD (labels ,data ) ; 167 168 // make a string for assembling the data to 169 log : 170 String dataString = "" ; 171 172 dataString += myTime .