Using the Shelly Plus Plug S to measure homelab power

Using the Shelly Plus Plug S to measure homelab power

I’m using a Shelly Plus Plug S smart plug to measure the power usage of my homelab. I added it as a device in Home Assistant — and the power readings began! Kind of…

Within a few days; I noticed something strange with the graph history — there were long periods of time where the graph was completely flat. Logging into the Shelly web interface, I could see the watt reading changing — without this being reflected in Home Assistant.

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Underground conduits to garage and shed

Underground conduits to garage and shed

Two years ago we dug and laid three conduits from the house to the garage, and from the garage to the shed. Primarily to get more power to the garage — and any power to the shed.

I used the opportunity to put in an additional conduit for fiber, and lots of conduits from the main switch board down into the basement.

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Arch Linux laptop power — suspend, battery, and charging

Arch Linux laptop power — suspend, battery, and charging

I recently got a new laptop, (well — not new, but new to me), a HP ZBook 15 G5. After installing Arch Linux and the i3 wm I spend some time setting up power management, suspend on idle, and figuring out the state of the battery.

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Reducing our energy consumption

Reducing our energy consumption
Eaton xDigital ciruit breakers

With the electricity prices we’ve seen in Europe lately — I wanted to see if we could reduce our energy consumption. I’m specifically looking at “wasted” energy, meaning usage we can reduce without even noticing it.

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Homelab power upgrades — new MBP, PDU, and USB power

Homelab power upgrades — new MBP, PDU, and USB power

I’ve already written about my PDU suddenly dying — and in that post I explained that I was going to do some changes to the homelab power layout. It’s time to do those changes 🙂

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The homelab PDU died!

The homelab PDU died!

My homelab PDU suddenly died! It’s dead, D-E-D, dead! There are few things worse than a server rack suddenly going completely silent…

The PDU has had an error since the power outage last summer — F11 means Power fail on auxiliary 1. Which is an odd error for a PDU with only one input. And; it wasn’t possible to clear or reset it it 😕

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Surprice UPS and shutdown test

Surprice UPS and shutdown test
PDU showing error F11; Power Fail

A few days ago; sitting outside — drinking coffee and minding my own business, I received an email from my UPS:

Utility power not available.

2021/06/01 18:38:27

My homelab had lost both power sources 😮 This whole area had a power outage — a good opportunity to do a UPS and power down test 😛

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My new home office

My new home office

In our new house there is an 20 m² basement, it consists of two rooms — both 10 m². I have turned the inner room into my new home office/server room, with my electronics lab and homelab.

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Homelab (2019)

Homelab (2019)

I’ve got a tiny computer lab at home; a 29U rack with servers, UPS, ATS, PDU, 10 Gbit networking, OPNsense, and all the cool stuff.

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The homelab adventure begins!

The homelab adventure begins!

I first got the server rack back in 2011. At the time I lived alone in a house; I had a UPS, single server, a few cheap NAS’ and a switch in it. When I met my girlfriend, and we moved together about two years later the rack went into storage. And it stayed in storage until we bought our house late 2014, where we currently live. The rack was put to use in my home office in the basement, but not really utilized much. It’s only lately, and after I found /r/homelab, that the rack was truly put to use in my current homelab.

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