M5StickCPlus + SCD30 + original 3D printed case + python
This is a CO2 concentration measuring system using M5StickCPlus and SCD30 with a time-series graph function and a screen brightness switching function.
It also allows you to set the boundary values of warning/danger, which are set to 1000/1500 by default, and displays yellow when in warning and red when in danger. The red LED will also blink slowly in the “danger” state.
As an added bonus, it also has the ability to display the charge status and battery level.
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