The ES-12129-V1 breakout board is made to make evaluating Sensirion’s SCD40 CO2 sensor, or carbon dioxide sensor, simple and affordable. Sensirion’s SCD40 CO2 sensor is a premium photoacoustic sensor that can detect CO2 levels from 0 to 40000ppm with optimal accuracy over 400-2000ppm +-(40ppm+5%). The SCD40 contains built-in humidity and temperature sensors to increase accuracy.
With remarkable accuracy, the SCD40 CO2 Sensor / carbon dioxide sensor breakout is a small, high-performing sensor module that can identify and gauge the amount of carbon dioxide in the atmosphere. Because of its ultra-low power consumption mode and cutting-edge infrared sensing technology, it is perfect for battery-powered applications that need to continuously monitor CO2 levels. The SCD40 Sensor breakout works with a variety of microcontrollers and development boards and has an intuitive I2C interface. With a lengthy lifespan and a long time between calibrations, it’s an affordable and dependable choice for determining carbon dioxide concentrations in a variety of settings. The SCD40 CO2 Sensor breakout / carbon dioxide sensor is a flexible instrument that can be used in a wide range of applications, such as HVAC systems, smart home automation, and indoor air quality monitoring. Its tiny form factor and high performance make it a perfect choice.
SCD40 Specifications

Photoacoustic CO2 sensor technology (carbon dioxide sensor)
Integrated temperature and humidity sensor
Measurement range: 400 ppm 2000 ppm
Accuracy: +-(50 ppm + 5 % of reading)
Current consumption: 17 mA (meas. rate = 5 s) / 0.5 mA (meas. rate = 5 min)
Fully calibrated and linearized
I2C digital interface
Board Dimensions: 20mm x 20mm

Resources

SCD40 Datasheet

User Guide and sample code

Evelta SCD40 Breakout 3D Step File

Sensirion I2C SCD4x Arduino Library(Library for the SCD4X sensor family by Sensirion Enables you to use the SCD40 and SCD41 sensors via I2C.)

SCD40 Breakout Dimensions

SCD40 carbon dioxide sensor Breakout I2C Arduino Connections

FAQs:
Q: What does the 7Semi SCD40 Sensor measure?
A: The 7Semi SCD40 Sensor measures carbon dioxide (CO) concentration, temperature, and humidity, providing accurate data for indoor air quality monitoring and environmental control.
Q: What technology does the SCD40 use for CO measurement?
A: The SCD40 uses advanced Non-Dispersive Infrared (NDIR) technology for precise CO detection and measurement.
Q: How do I connect the 7Semi SCD40 Sensor to my microcontroller?
A: The SCD40 Sensor connects via an IC interface. You can connect it to your microcontroller using the SCL (Serial Clock Line) and SDA (Serial Data Line) pins, following standard IC wiring practices.
Q: What are the main applications for the SCD40 Sensor Breakout Mini?
A: The SCD40 Sensor is ideal for applications such as indoor air quality monitoring, smart home systems, HVAC control, and environmental sensing in various DIY and professional projects.
Q: What is the operating temperature range for the SCD40 Sensor?
A: The SCD40 Sensor operates within a temperature range of 0C to 50C, making it suitable for typical indoor environments and many practical applications.