Pi as a UPS monitor

scottalanmiller

@gjacobse I like that, it's cute.

travisdh1

@gjacobse Nice find. And only uses 6 pins? I've got a 2.5" display that uses most of the GPIO block

gjacobse

@gjacobse Nice find. And only uses 6 pins? I've got a 2.5" display that uses most of the GPIO block

The only thing I might do is see if it was possible to rotate the display part 90deg,.. free up the header area for more - OR make a breakout board for all 20 GPIO with the OlED turned...

gjacobse

@JaredBusch

Did you ever get this project finished?

JaredBusch

Aside from alerting, this was working. No, I never circled back to this.

bxdobs

Struggling with getting nut to work with an old APC UPS ... lsusb suggests the UPS USB port is connecting to the PI (it lists the device when plugged in) but can't seem to find the right combination of configurations to allow nut to actually monitor the UPS itself.

tried drivers;
usbhid-usb port=auto
genericusb with type; = 1, 2, 9, or 12 (port=serial1)
apcsmart
apcsmart-old
apcupsd-ups

seems that the ups is just not being found

is there some way to manually poke the USB port (sort of like we used to do with uarts with AT commands)?

gjacobse

@bxdobs said in Pi as a UPS monitor:

Struggling with getting nut to work with an old APC UPS ... lsusb suggests the UPS USB port is connecting to the PI (it lists the device when plugged in) but can't seem to find the right combination of configurations to allow nut to actually monitor the UPS itself.

tried drivers;
usbhid-usb port=auto
genericusb with type; = 1, 2, 9, or 12 (port=serial1)
apcsmart
apcsmart-old
apcupsd-ups

seems that the ups is just not being found

is there some way to manually poke the USB port (sort of like we used to do with uarts with AT commands)?

I actually just went through this about a month or so ago when I set up Ubuntu Server and a APCups. I'm not at the house to pull what I did,... but I heavily referenced this very thread. Yes - where I don't live in Linux CLI as some do, I had to do some trial and error again. but that's part of (re)learning.

bxdobs

Removed the nut installation, config files and did a complete Raspbian upgrade ... Now after reinstalling nut with the bare minimum configuration, it is finally talking to the ups.

Even though I have been technically involved with computer tech going back to the late '70s, this install was certainly not for the faint of heart ... I can understand why people walk away in frustration from this stuff

travisdh1

2023, and this thread is still the best resource for getting nut/apcupsd running.

travisdh1

I'll add another note for future reference here.

For Fedora 39 Server, apcupsd has another package apcupsd-cgi that can be used with a web server to display UPS status. However, you have to move the files it installs by default because they're not in the /var/www/cgi-bin directory.

sudo dnf install -y apcupsd apcupsd-cgi httpd
sudo mv /var/www/apcupsd /var/www/cgi-bin/
sudo chown apache:apache /var/www/cgi-bin/apcupsd/*
sudo systemctl enable --now httpd

Should get it up and running.
I found 3 useful tools with it.
http://YOURIP/cgi-bin/apcupsd/uspstats.cgi
http://YOURIP/cgi-bin/apcupsd/multimon.cgi
http://YOURIP/cgi-bin/apcupsd/upsfstats.cgi