I would like to measure Co2 concentration using Raspberry Pi3.
I am connecting to the following site for reference.
"None" appears when the program is running and cannot be measured.
I'm at a loss because I don't know the cause.
Please let me know how to measure it.
■ Reference site
Measure CO2 concentration with Raspberry Pi3 - Qiita
https://qiita.com/revsystem/items/5a362e749ef80358e801
Run cat/boot/config.txt | grep enable_uart on the terminal and click
enable_uart=0
Then, the reason why I can't read the sensor is that RPi's UART is open and not open.
If so, refer to the article
https://qiita.com/revsystem/items/5a362e749ef80358e801
Original story for
https://qiita.com/UedaTakeyuki/items/c5226960a7328155635f
"If you open the UART by referring to ""Preparation (Free UART)"" in , you will be able to read it
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