Anyway, I do not think that this correction would help, as the values continuously jump up to +-200 ppm. I have worked with many different Arduino boards and currently I am exploring, Arduino powered LoRa, Power line communication and IoT.

The ZMOD4410 gas sensor module is an easily integrated firmware configurable architecture enabling multiple sensing solutions with a common hardware platform. You can also learn more about the basics of OLED display and its types by reading the linked article. It has characteristics such as high sensitivity, high resolution, low power consumption, fast response, anti-water vapour interference, no poisoning, high stability and long life.note that only one file can be open at a time, 186 187 // so you have to close this one before opening another. Be sure to align the white and blue wires of the data cable with the corresponding labels on the bridge. Using the SCD30 with Arduino is a simple matter of wiring up the sensor to your Arduino-compatible microcontroller, installing the Adafruit SCD30 library we've written, and running the provided example code.

In addition, this Gravity: Analog Infrared CO2 Sensor For Arduino (0~5000 ppm) 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. Then, create an Adafruit display instance with the width and height defined earlier with the SPI communication protocol. 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 . It can work on three different communications Protocols: SPI 3 Wire mode, SPI four-wire mode, and I2C mode.

note that only one file can be open at a time, 136 // so you have to close this one before opening another. Now once you got the R o values, Go to Documents > Arduino > libraries > MQ135-master folder and open the MQ135. This Gravity: Analog Infrared CO2 Sensor is able to directly compatible with the DFRobot Arduino IO expansion board thanks to its external DFRobot Gravity interface.