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Low Battery Warning - Cumulus Console

Discussion specific to Davis weather stations
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grwkak
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Low Battery Warning - Cumulus Console

Post by grwkak »

Got a low battery warning on the CMX console/home page. Checked the Vantage Vue console - no warning. Changed the ISS battery anyway and the low battery warning reappeared today - yet the Vantage Vue console shows nothing. What am I missing - seems CMX thinks its low and the Vue console does not!

Guy
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PaulMy
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Re: Low Battery Warning - Cumulus Console

Post by PaulMy »

Is it a (dot) Battery low message or (dot)?
(dot) means you have the alarm settings to show the alarm warning on the dashboard page, and (dot) means CumulusMX is passing on an alarm message and which will flash when triggered.

Enjoy,
Paul
Davis Vantage Pro2+
C1 www.komokaweather.com/komokaweather-ca
MX www.komokaweather.com/cumulusmx/index.htm /index.html /index.php
MX www.komokaweather.com/cumulusmxwll/index.htm /index.html /index.php
MX www. komokaweather.com/cumulusmx4/index.htm

Image
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

Flashing red dot. But no console low battery alarm.

Guy
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mcrossley
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Re: Low Battery Warning - Cumulus Console

Post by mcrossley »

Have you checked the log, the low battery alarm can be triggered either by a transmitter battery low (that is just an OK/Low flag), or by the console batteries which report an actual voltage. CMX uses a cut off voltage of 5.4V to determine the low condition*, the console may use a lower voltage threshold.

*I chose 5.4V as that is 1.35V per cell, and leaves a fair reserve for backup power. You do not want the console batteries to run too low when you have a logger installed as they will then not have a very long run-time in the event of a power failure.

EDIT: Sorry, the 5.4V is for the WLL not the VP2/Vue. The VP2/Vue uses 3.5V.
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

let me look today - alarm comes and goes (this morning all green).

Guy
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

Still green. Going to watch and see.

Guy
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

Okay, back this morning (flashing red dot). I assume this will be logged is in the MXDiags file? A quick look in there did not show anything.
20211205-104853.txt
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mcrossley
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Re: Low Battery Warning - Cumulus Console

Post by mcrossley »

I just checked the code - and the Davis battery status does not log anything :(

You could check the current console voltage and transmitter states via the call...

http://<cmx_ip>:8998/api/tags/process.json?txbattery&battery
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

{"txbattery":"1-ok 2-ok 3-ok 4-ok 5-ok 6-ok 7-ok 8-ok","battery":"4.58"}

Now the alarm is not red anymore!!!!

Guy
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mcrossley
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Re: Low Battery Warning - Cumulus Console

Post by mcrossley »

Hmm, maybe switch on data logging, then as soon as you get the next alarm - note the time, and post the MXidags log please. I can take a look at the raw data from the station and see what is triggering it.

You can do the check above at the same time.
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

Its red again:

{"txbattery":"1-ok 2-ok 3-ok 4-ok 5-ok 6-ok 7-ok 8-ok","battery":"4.58"}
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

Lets see if this helps. About 7:45am the alarm was going off (red blink). Just looked now and it off (9:50). Data logging was enabled.
20211205-104853.txt
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mcrossley
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Re: Low Battery Warning - Cumulus Console

Post by mcrossley »

Ah, you are using Ecowitt extra sensors, it looks like the soil sensor dropped to 1.2V at 08:47. That would trigger the battery alarm.

I think I should add some logging to alarms being triggered!
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

Ahhh! Thanks - did not even think of the additional sensors!!!

Guy
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grwkak
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Re: Low Battery Warning - Cumulus Console

Post by grwkak »

With b3194 this has reappeared - low battery alarm triggered intermittently.

Guy
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