The Raspberry is running latest Raspbian and monitors the UPS using Network UPS Tools (NUT) which can power off the computer, send notifications etc. I have set up script to log the events and get an SMS on power failures (using Android phone and SMS Gateway).
Below is a screenshot from the NUT monitor GUI and results from a test run of the setup. I have manually started a bash script to collect the battery status by pooling every 15 seconds with "upsc eaton3s@localhost | grep battery.charge:"
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| Screenshot from the NUT Monitor GUI |
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| Power failure test |
Eaton has stopped official support for Linux (at least for this device). NUT does not give guarantee and support for the device anymore. I found that I could not stop the beep function from NUT, but the windows client provided by Eaton did the job.
Pros:
- attractive price for the features it offers
- regular sockets
- could be controlled remotely (you can switch on/off the load via the USB interface)
Cons:
- doubtful Linux support
- a bit bulky
Update 2017.10.31: Just briefly to update on the subject.
I needed to replace the battery after 2.5 years and here is graph from the yesterday's "blackout".
It seems that at 85% the charging regime changes - this was not captured on the figure above by pure chance.
2 comments:
It works rather well. The RPi survives the switch to battery and back without complaints. It worked on all occasions so far (3 or 4 time since the post). Perhaps the RPi power supply is also contributing to it - it is a rather bulky 2.5A PHILIPS USB power supply. The RPi itself is hooked only to 2 USB devices that consumes MaxPower 90mA(Tellstick Duo) and 20mA(Eaton 3S). I have also Tellstick Net, cordless phone, broadband and fiber router that also work flawlessly during power disruptions - they all have their own separate power adapters.
Marbaf question/comment is relevant. I have now a NAS hooked on the same UPS and that one does not survive the short time between power to battery...
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