Looking for a way to shutdown raspberry pi from ups

General Discussion
1

Basic Information:

Printer Model: ender 3 v2
MCU / Printerboard:btt mini e3 v3
Host / SBC pi3b+
klippy.log
klippy (12).log (76.7 KB)

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

…
Ive been having a few power cuts locally that mess up my prints and worried about SD card in the sbc with the grid auto resetting
ive got a small UPS coming for the printer and sbc and would like to trigger a shutdown of moonraker or the raspberry pi with for example a button/relay input when the battery gets low in the ups
does anyone know how to do this or a better way of doin this ?
thanks

2

How long are those power cuts? Seconds, minutes, or even hours?

3

sporadic most of the time its a few seconds to a minute but yesterday it was about 3 hours
so hoping the ups will pick up the slack on the short ones and print continue as normal, but on the long ones it will run till say 50%, then shut everything down or just kill the printer and leave the rpi powered up

4

Moonraker offers many possibilities to do so. The question is, how does your UPS indicate a low battery condition for any services to react upon.

For examples see:

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