**long** use instead of **float** use = possible? about bme280 HOT 6 OPEN

The BME280 accuracy does not warrant 8 significant figures. A LONG requires the same 4 bytes as a FLOAT.

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Thanks for your answer,

Even with the .18Pa resolution? (I know the accuracy is only 100Pa)
https://www.embeddedadventures.com/datasheets/BME280.pdf

What about the number of processor cycles to work with a float instead of working with a long?

the 11000000 (110000.00x100) maximum need only 3 Bytes to be send.

Without modifying anything it is not possible to get a double instead a float?

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I am plotting the difference between two BME280 modules that are at the same temperature. Overnight this difference gave rise to a metre of indicated height difference even with an averaging function over a period of 200 seconds. With barometric pressure readings speed is not required since it changes relatively slowly and hence noise can easily be eliminated. Perhaps my BME280s are from a bad batch and I should try a couple from Adafruit. I need more stability in the reading. I hope to find a better sensor than the BME280 that doesn't cost too much.

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The problem reading the BME280 with an Arduino is that a float only gives 6 significant figures. If you need more precision I you can minus 1000 hPa from the pressure readings. Then average over multiple readings. Averaging is essential to eliminate the noise which I find is rather higher than the stated 0.2 Pa claimed by Bosch.

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I am fine moving it to a long. I would have to do some tests to see if there is any actual loss of precision.

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Can you submit a PR for this? And we can look into it.

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