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A comment on Building the Pocket CO2 Project.

Re:Building the Pocket CO2 Project by patja on Wednesday April 26, 2023 @06:33PM (#35720893)
A similar project can be done without soldering using parts from Adafruit, including a module for the Sensiron chip. Here is a project I made using Adafruit's e-ink module and the SCD41 module they sell: https://www.printables.com/model/121265-salud-co2-monitor
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Re:Building the Pocket CO2 Project by bitbank on Wednesday April 26, 2023 @06:37PM (#35720918)
I need to add price details to my blog post. The main goal of mine was low cost. The total cost for me to produce each board is $17 where $14 of that is the SCD40 sensor.
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Re:Building the Pocket CO2 Project by patja on Wednesday April 26, 2023 @06:51PM (#35721035)
That's impressive! Mine was over $100. The SCD40 in module format is $45.
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Re:Building the Pocket CO2 Project by ahaucnx on Wednesday April 26, 2023 @07:22PM (#35721293)
You can get SCD40s on AliExpress for under USD 15. I bought a few and around 20% did not work and some had some weird data patterns occasionaly.
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