Adding an APC UPS to Home Assistant energy dashboard

Sun, 05 Sep 2021 00:00:00 +0000

EDIT: (2021-09-19): After some back and forth with /u/Laxarus, there is now a simpler method! The snmp platform still does not support setting device_class, but wrapping the sensor in another template sensor is not required; just do so in your customize.yaml. I have called this out below.

This is another quick “here’s how I did it, hope this help” post.

In preparation for the inevitable grid brownouts that summer 2021 would bring, I installed a rather beefy UPS for my home network / lab. After some browsing, I discovered a local eWaste liquidator with a really good deal on some second-hand APC UPSs.

Monitoring APC AP7900 switched PDU with Prometheus and Grafana

Sun, 27 Dec 2020 00:00:00 +0000

The APC AP7900 is a 1U single phase PDU with 8 switchable outlets and a network interface. It’s been EoL’d and can be had for less than 20% of it’s original price on eBay. The network interface is so underpowered tha it can’t support any modern cryptographic ciphers.

So with that, here’s a revised copy of my notes from the process of getting the device reset, updated and monitored.

SNMP on karl

Adding an APC UPS to Home Assistant energy dashboard

Monitoring APC AP7900 switched PDU with Prometheus and Grafana