Adafruit SCD-30 - NDIR CO2 Temperature and Humidity Sensor - STEMMA QT / Qwiic

The SCD-30 is a precise NDIR CO2 sensor that measures the CO2 concentration in parts per million (PPM) in ambient air. Unlike sensors that estimate CO2 levels based on VOC (volatile organic compound) concentrations, the SCD-30 directly measures CO2, providing accurate readings. This makes it ideal for environmental sensing, scientific experiments, air quality monitoring, and ventilation studies.

Key features of the SCD-30 include:

• NDIR CO2 Sensor: Real, direct CO2 detection, not an approximation.
• Built-in Temperature and Humidity Sensor: An integrated SHT31 sensor compensates the CO2 readings and provides full environmental data.
• Dual-Channel Detection: For enhanced stability and accuracy.
• Measurement Range: 400 ppm to 10,000 ppm of CO2.
• Accuracy: ±(30 ppm + 3%) for reliable measurements.
• Current Consumption: 19 mA when taking a measurement every 2 seconds.
• Calibration: Fully calibrated and linearized for precise readings.

The sensor uses I2C communication, making it compatible with most microcontrollers and microcomputers. It comes in a STEMMA QT form factor, allowing for simple, solderless connections with SparkFun Qwiic I2C connectors. This makes it easy to integrate with development boards like Raspberry Pi, Metro M4, or Arduino.

Additional features:

• Voltage Compatibility: Works with both 3.3V and 5V systems.
• Integrated Level Shifting: Ensures compatibility with various microcontrollers.
• Pre-Soldered on Custom PCB: For easy integration into projects.

This sensor is perfect for any project that requires precise CO2 monitoring and environmental data.