HackSpace Magazine Issue 54 – Review: SCD-40 CO2 Sensor #Adafruit @HackSpaceMag

HackSpace Magazine — Issue 54 reviews the Adafruit SCD-40 True CO2, temperature and humidity sensor:

If you have a greenhouse, exotic plants, or even a vivarium, then measuring CO2 accurately may be critical to your ecosystem’s success. And that’s where the Adafruit SCD-40 breakout board comes into play. Unlike the typical ‘gas’ sensors out there that approximate the amount of VOCs in the air, the SCD-40 is a photoacoustic, ‘true’ CO2 sensor that can tell you the specific CO2 PPM composition of the surrounding ambient air. It’s a true measurement of CO2 concentration.

The board also features Adafruit’s STEMMA QT form factor which allows you to wire it up
quickly, without soldering, via their QT connectors and cables. And, if you need even more range in measuring CO2, typically only in industrial situations, they also sell a version that features an SCD-41 sensor. It costs a little bit more, but you also get an extended range, and increased accuracy. Head on over to the product page to learn more about accurately reading CO2 levels.

They give the board a 9/10, saying “Accurate readings are what this is all about.”

Read more on page 103download PDFbuy nowsubscribe.

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