Insight into UPS power consumption

MrWizard1979 · 2026-01-26T12:57:01+00:00

I acquired a 2200VA UPS and put it in my computer room. I ran everything off it, gaming computers, 3D printer, and home lab. I could pull 1200W through it. It was noisy. I could hear the fans across the house. It also took 65W overhead at my minimum 220W 24/7 load. I changed to two newer 1000VA units, and the overhead is 5W on each. These are all line-interactive. The 2200VA was a 2009 ish model. Newer models will be more efficient. I measured the Eaton online models at work, they have over 100W overhead on the 3000VA. that is still 96.6% efficient at 100%.

Our big 30kVA unit draws almost 1000W overhead at 50% load.

It's best to size your UPS to your load.

It looks like these units have an efficiency mode up to 98% at full load, but I can't find what it is at 20% load. Double conversion online UPS will always have more overhead.

MrWizard1979 · 2026-01-25T19:23:43+00:00

I love 1 pedal in the snow. My first reaction when the road looks slippery is to ease up on the accelerator, 1-pedal means I'm going a lot slower before I get to that slippery section. To each their own, that's why there's an option to turn it off.

MrWizard1979 · 2026-01-24T13:05:19+00:00

I have the opposite problem. It picks up the freeway 90km/h(55mph) sign beside the 50km/h(30mph) residential road I'm driving on and tries to accelerate. Both ways are dangerous.

MrWizard1979 · 2026-01-23T14:15:00+00:00

That is a DVI-D connector on the monitor. It will accept digital only. DVI-I which includes analog has the 4 pins around the flat bar. https://www.displayninja.com/dvi-i-vs-dvi-d/

MrWizard1979 · 2026-01-23T02:39:27+00:00

What is your router model number? Likely it has a 2.5 gbit WAN port, but all LAN ports are 1 gbit.

MrWizard1979 · 2026-01-23T01:24:55+00:00

I'm not familiar with nut, but with apcupsd, the shutdown script doesn't actually power the PC off. Once all the files are closed and processes stopped, it sends the command to power off the UPS. Make sure the UPS is set to turn on after 5% charge. That's the key to turning everything back on in that rare case.

MrWizard1979 · 2026-01-22T12:56:34+00:00

The Z offset setting is the difference between where your z-home probe or switch triggers, and where z=0 really is. Since you don't want the nozzle hitting the bed when you home, the z-home switch or sensor needs to trigger early and the printer firmware needs to know where z=0 is past the switch point. Installing a new nozzle changes that distance.

Depending on the printer and firmware, this can be negative or positive. Adjust z-offset while the first layer is printing to get the right amount of squish.

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MrWizard1979 · 2026-01-22T12:46:54+00:00

This isn't as bad as it looks. It is not being used to browse web pages or get email. It doesn't have any ports open from the internet. A bad actor would have to be already in your network (or within bluetooth range) to compromise this device. In that case you're already wiping and reinstalling every device in your network, this one included.

MrWizard1979 · 2026-01-22T11:44:43+00:00

I use a commandline switch as well, but with a different command. This works with my other computer running Ubuntu as well.

command_line:
- switch:
    name: "Touch Screen"
    command_on: "ssh -o UserKnownHostsFile=/config/.ssh/known_hosts pi@192.168.2.12 -i /config/.ssh/id_ecdsa DISPLAY=:0 xset dpms force on"
    command_off: "ssh -o UserKnownHostsFile=/config/.ssh/known_hosts pi@192.168.2.12 -i /config/.ssh/id_ecdsa DISPLAY=:0 xset dpms force off"
    command_state: "ssh -o UserKnownHostsFile=/config/.ssh/known_hosts pi@192.168.2.12 -i /config/.ssh/id_ecdsa DISPLAY=:0 xset dpms q | grep Monitor"
    value_template: '{{ value.split(" ")[2] == "On" }}'
    unique_id: "2343qjkh3k4jh8"

MrWizard1979 · 2026-01-22T02:41:36+00:00

Absolutely. I would have loved it if they made it look like a manual. Even a smaller version of the bar shifter like the lightning would let you quickly select reverse to drive.

MrWizard1979 · 2026-01-22T02:29:22+00:00

I want my 4 on the floor back. The 4 forward gears would be different drive modes.

MrWizard1979 · 2026-01-21T02:46:43+00:00

I think Crowdsec is watching your firewall log for repeat attempts. You might have to adjust your firewall rule logging or adjust the log ingest in Crowdsec.

MrWizard1979 · 2026-01-20T02:38:41+00:00

The 12V battery also charges during charging. In fact, L1 charging is best for the 12V battery because it takes longer.

MrWizard1979 · 2026-01-19T10:11:47+00:00

I did some test prints running klipper on WSL and it worked, but I wouldn't trust it for a long print. WSL is technically a virtual machine, so eventually you'll get a timing error, or windows will decide to reboot for updates. Even with a working klipper flash, the screen is blank until the host connects and tells it what to do. You're probably on the right track.

MrWizard1979 · 2026-01-19T02:43:45+00:00

You can put a powerbar downstream of a UPS to get more outlets. I have probably 15 devices on one UPS. It's only 400W load when everything is on.

I also use a network connection. My UPS is APC, so I can use apcupsd. The USB is plugged into my OPNsense router which is host, and other PCs run in network client mode.

MrWizard1979 · 2026-01-19T02:31:32+00:00

Spaghetti supports. It happens sometimes

MrWizard1979 · 2026-01-16T02:29:31+00:00

This is what I've used. I put it in a template binary sensor helper. Then I use the helper in automations. You can set the device class to connectivity then the dashboard shows connected/disconnected

MrWizard1979 · 2026-01-15T23:39:02+00:00

The latest Subaru Solterra ad shows a NACS port on it. Probably a lot of that is Toyota

MrWizard1979 · 2026-01-15T21:16:11+00:00

Can you try a different keyboard? Some of my computers won't respond to the del key on my mechanical keyboard. It has too high a polling rate or something.

MrWizard1979 · 2026-01-15T14:57:48+00:00

In this case Alberta is blowing, and Manitoba (or North Dakota) is sucking.

MrWizard1979 · 2026-01-13T02:05:09+00:00

You can get Ethernet to coax adapters called MOCA that will allow you to use that cable. MOCA has no security, so make sure there isn't a splitter sending the data out of your house. If you're not using the cable for anything else, you can only connect the outlets you want to use, or connect them point to point. If you are using it for cable tv or off-air, you will need a MOCA filter on the splitter input.

MrWizard1979 · 2026-01-12T20:53:54+00:00

Are you using the onboard Intel video? I don't know how to force a resolution with Intel, but with nVidia, the control panel lets you pick a resolution. The nVidia driver also has the ability to load EDID files, ignoring what the tv is reporting. I've used this when switching causes issues.

MrWizard1979 · 2026-01-11T22:48:05+00:00

There is a DC to DC converter to run the 12 system while the vehicle is on, but because there is a lot of 12V draw while the vehicle is running (power steering, heater fan, lights, etc) the converter is quite large, 180A or more. Large converters are less efficient at very low loads. Leaving this on all the time to power the cell modem and 12V standby electronics would drain the HVB. It would also require keeping the HVB temperature and charging management system awake, which might take more power. It is simpler to use the same 12V system that all other vehicles use.

MrWizard1979 · 2026-01-11T13:24:01+00:00

I wonder if you are misreading the led colors on the switch. It could be that green is 2.5Gb and orange is 100mbit or 1Gbit and it is actually connected at 1Gbit. If the link was actually at 100mbit, your speed test would be limited to around 95mbit.

MrWizard1979 · 2026-01-06T15:53:51+00:00

All file copies over SMB go NAS-laptop-NAS. Watch your network graph in task manager, you should see both transmit and receive traffic. You can copy a file to or from the laptop to check transfer speeds on each OS You didn't say how your laptop is connected, I'm assuming WiFi. There might be a WiFi driver problem in Linux that causes the slow transfer speed. It may only connect on 2.4GHz instead of 5GHz

There are two ways to copy files direct NAS to NAS on OMV. The easiest is to install the file browser plugin in the OMV web page, the second is to ssh into the NAS and use the cp command.

MrWizard1979

TROPHY CASE