Hi. I have connected a BME280 module to the ESP32, while the temperature shows fine, the humidity is also rather good, the pressure is rather wrong. It comes out about 30hPa too low, is there any way to correct the pressure gauge in tasmot?

. Weather forecasts give a measurement taken at a level reduced to sea level. At least that is the way it should be.

. Too little in realation to what? Standard in such cases:

In relation to what is given by the smartphone app and the current msn forecast service. Are you suggesting to me that my barometer is giving the right one in relation to the altitude it is at, and the forecasts are giving the pressure at sea level altitude?

The last hint solved the problem.

[Solved] BME280+Tasmota+ESP32: Pressure correction, pressure gauge calibration, improved readings

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#1 20191943 15 Sep 2022 20:33

opaaa opaaa

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Post #1
20191943 15 Sep 2022 20:33

Hi. I have connected a BME280 module to the ESP32, while the temperature shows fine, the humidity is also rather good, the pressure is rather wrong. It comes out about 30hPa too low, is there any way to correct the pressure gauge in tasmot?

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#2 20192055 15 Sep 2022 21:43

ex-or ex-or

Level 28

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Post #2
20192055 15 Sep 2022 21:43

opaaa wrote:
I find myself about 30hPa too low,
.
Too little in realation to what?

Standard in such cases: https://pl.wikipedia.org/wiki/Ci%C5%9Bnienie_atmosferyczne_zredukowane
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#3 20192084 15 Sep 2022 21:59

opaaa opaaa

Level 4

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Post #3
20192084 15 Sep 2022 21:59

In relation to what is given by the smartphone app and the current msn forecast service.
Are you suggesting to me that my barometer is giving the right one in relation to the altitude it is at, and the forecasts are giving the pressure at sea level altitude?
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#4 20192139 15 Sep 2022 22:37

khoam khoam

Level 42

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Post #4
20192139 15 Sep 2022 22:37

opaaa wrote:
and forecasts give the pressure at sea level height?
.
Weather forecasts give a measurement taken at a level reduced to sea level. At least that is the way it should be.
#5 20302487 25 Nov 2022 11:40

opaaa opaaa

Level 4

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Post #5
20302487 25 Nov 2022 11:40

The last hint solved the problem.
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