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Ecowitt Temperature sensors

From build 3044 the development baton passed to Mark Crossley. Mark has been responsible for all the Builds since. He has made the code available on GitHub. It is Mark's hope that others will join in this development, but at the very least he welcomes your ideas for future developments (see Cumulus MX Development suggestions).

Moderator: mcrossley

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HansR
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Ecowitt Temperature sensors

Post by HansR »

Do Ecowitt temperature sensors return physically in Fahrenheit or is this a user setting on the device.
Does CMX convert this (it definitely does not for the CO2 device which is logged as Fahrenheit while my CMX setting is Celsius)?
Hans

https://meteo-wagenborgen.nl
CMX build 4017+ ● RPi 3B+ ● Raspbian Linux 6.1.21-v7+ armv7l ● dotnet 8.0.3
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mcrossley
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Re: Ecowitt Temperature sensors

Post by mcrossley »

I'm pretty sure that physically they return in Celsius over the air.

But I think what you are asking is what does the GW1000 send? The answer to that is: it depends...! The GW1000 local API returns values in Celsius, the HTTP protocol sends the values as Fahrenheit.

The CO2 temperature via the HTTP protocol is a bug, the conversion was missed out, I've just fixed that for the next release, thanks.
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Re: Ecowitt Temperature sensors

Post by HansR »

OK, thanks.

So I normally can expect all Ecowitt temperatures to be in the logs in the unit the user has defined.
Hans

https://meteo-wagenborgen.nl
CMX build 4017+ ● RPi 3B+ ● Raspbian Linux 6.1.21-v7+ armv7l ● dotnet 8.0.3
zoomx
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Re: Ecowitt Temperature sensors

Post by zoomx »

mcrossley wrote: Thu 09 Sep 2021 8:46 am I'm pretty sure that physically they return in Celsius over the air.
You can remove "pretty".
RTL_433 code explain the RF protocol uset. All values are in Celsius, mm, m/s and so on.
I don't understand why they used Fahrenheit in the http protocol since there is WU protocol.
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HansR
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Re: Ecowitt Temperature sensors

Post by HansR »

zoomx wrote: Thu 09 Sep 2021 3:38 pm
mcrossley wrote: Thu 09 Sep 2021 8:46 am I'm pretty sure that physically they return in Celsius over the air.
You can remove "pretty".
RTL_433 code explain the RF protocol uset. All values are in Celsius, mm, m/s and so on.
I don't understand why they used Fahrenheit in the http protocol since there is WU protocol.
Fair enough :)
Hans

https://meteo-wagenborgen.nl
CMX build 4017+ ● RPi 3B+ ● Raspbian Linux 6.1.21-v7+ armv7l ● dotnet 8.0.3
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