SCD30 with Arduino

arduino_c02_sensor.ino

// Basic demo for readings from Adafruit SCD30
#include <Adafruit_SCD30.h>
#include <LiquidCrystal.h>

// Create an LCD object. Parameters: (RS, E, D4, D5, D6, D7):
//* Arduino example code for DHT11, DHT22/AM2302 and DHT21/AM2301 temperature and humidity sensors. More info: www.makerguides.com */
LiquidCrystal lcd = LiquidCrystal(3, 4, 5, 6, 7, 8);

Adafruit_SCD30  scd30;

void setup(void) {
  Serial.begin(115200);
  // Specify the LCD's number of columns and rows. Change to (20, 4) for a 20x4 LCD:
  lcd.begin(16, 2);
  while (!Serial) delay(10);     // will pause Zero, Leonardo, etc until serial console opens

  Serial.println("Adafruit SCD30 test!");

  // Try to initialize!
  if (!scd30.begin()) {
    Serial.println("Failed to find SCD30 chip");
    while (1) { delay(10); }
  }
  Serial.println("SCD30 Found!");

  // if (!scd30.setMeasurementInterval(10)){
  //   Serial.println("Failed to set measurement interval");
  //   while(1){ delay(10);}
  // }
  Serial.print("Measurement Interval: "); 
  Serial.print(scd30.getMeasurementInterval()); 
  Serial.println(" seconds");
}

void loop() {
  if (scd30.dataReady()){
    Serial.println("Data available!");

    if (!scd30.read()){ Serial.println("Error reading sensor data"); return; }

    Serial.print("Temperature: ");
    Serial.print(scd30.temperature);
    Serial.println(" degrees C");
    
    Serial.print("Relative Humidity: ");
    Serial.print(scd30.relative_humidity);
    Serial.println(" %");
    
    Serial.print("CO2: ");
    Serial.print(scd30.CO2, 3);
    Serial.println(" ppm");
    Serial.println("");

    // Read the humidity in %:
    float h = scd30.relative_humidity;
    // Read the C02
    float c = scd30.CO2;

    lcd.setCursor(2, 0);
    lcd.print("H:");
    lcd.print(h);
    lcd.print(" % ");
    lcd.setCursor(2, 1);
    lcd.print("CO2:");
    lcd.print(c);
    lcd.print("ppm");
  } else {
    Serial.println("No data");
  }

  delay(100);
}