8000 Support for negative values? · Issue #38 · h4/lywsd02 · GitHub
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Support for negative values? #38

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danergo opened this issue Jul 24, 2024 · 2 comments
Open

Support for negative values? #38

danergo opened this issue Jul 24, 2024 · 2 comments

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@danerg 9C79 o
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danergo commented Jul 24, 2024

Is it possible to display negative (-2 °C) values on this hygrometer?
@53RT
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53RT commented Aug 12, 2024

It does display negative temperatures. But I don't know how it will display double digit negative values as there is no third 7-segment digit for the temperature. In the spec sheet it says the device is not suited for under 0 °C. I also remember when testing low temperatures that the display gets dark and unresponsive at some point.

@danergo
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danergo commented Aug 16, 2024

Thx. According to some disassembled pictures, it sports Sensirion's SHTC3 sensor which is capable for measuring between -40 - 125 ˚C.

My plan is to get rid of the firmware and rebuild it, and use the large displays (where now the clock is) to display the outside temperature (which is sometimes negative).

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