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.
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.
ReplyDeleteMarbaf 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...
ReplyDelete