It is a device that measures CO2 level, inside and outside temperatures and humidity.
It is a device that measures CO2 levels, inside and outside temperatures, and humidity.
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Dimensions are 12.5x13x5cm, holes for buttons depend on the buttons type. Mine was 12mm in diameter. Then 5mm diameter holes for LEDs and a photo resistor. The screen it tricky because it depends on the type of the screen.
The 1st is for hours adjusting, 2nd for minutes and the 3rd one is for font color changing)
Right now there are more functions such as 1st and 2nd pressed CO2 sensor switches off auto calibration. If 1st and 3rd one are pressed it will perform zero calibration for CO2 sensor.
Hi Jimmy, I just soldered wires to the back side of the arduino.
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