NEW GUIDE: Adafruit SCD-40 and SCD-41 #AdafruitLearningSystem #Adafruit @adafruit

CO2 sensing over I2C in a tiny package!

The SCD-40 and SCD-41 are photoacoustic ‘true’ CO2 sensors that will tell you the CO2 PPM (parts-per-million) composition of ambient air. They really are measuring the CO2 concentration! That means they’re bigger and more expensive, but they are the real thing. Perfect for environmental sensing, scientific experiments, air quality and ventilation studies, and more.

The new Adafruit SCD-40 and SCD-41 guide covers everything you need to know to get measuring with your SCD-4x sensor. There’s an overview, detailed pinouts page, examples in CircuitPython and Arduino, and resource downloads.

Check out the full guide here: Adafruit SCD-40 and SCD-41!


As 2022 starts, let’s take some time to share our goals for CircuitPython in 2022. Just like past years (full summary 2019, 2020, and 2021), we’d like everyone in the CircuitPython community to contribute by posting their thoughts to some public place on the Internet. Here are a few ways to post: a video on YouTub, a post on the CircuitPython forum, a blog post on your site, a series of Tweets, a Gist on GitHub. We want to hear from you. When you post, please add #CircuitPython2022 and email circuitpython2022@adafruit.com to let us know about your post so we can blog it up here.

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


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