3DPrinting

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3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

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What specs should I look out for UPS (jlai.lu)

submitted 4 months ago* (last edited 4 months ago) by [email protected] to c/3dprinting

37 comments fedilink hide all child comments

I'm looking to buy ups as I have few power outage (last between 1 to 5 seconds max) where I live but I have never used one so don't know what specs should I check for

Ideally I will plug my 3d printer (about 100-160w when printing), a pi 4 with nvme drive (no idea of wattage) and a mini pc with n100 processor (around 10-20W)

Thanks for your advices

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[–] spitfire 2 points 4 months ago (1 children)

Yeah, that explains stuff. I thought you might have had some stuff on Pi that you could’ve been running on the PC. In that case I’d recommend that you run the NUT on RPi, and set it to pause print on a power failure, possibly change CPU scaling (i.e. to “powersave” CPU governor if you’re running Linux) on the mini PC, or even possibly shut it down in an event when the power outage lasts longer than a minute.

[–] [email protected] 1 points 4 months ago (2 children)

Actually I could even run Klipper on mini pc but would need a very long usb to reach printer and thought it wasn't ideal. As for the mini pc, I'm running proxmox but I'm far from being an expert so not sure if I can manage CPU scaling.

[–] spitfire 2 points 4 months ago

I am too, and it is really easy to do so. Look up “Linux cpu governor”. NUT (which is the most common UPS management software for Linux) can execute commands, start timers at different events from UPS.

[–] [email protected] 2 points 4 months ago

Actually I could even run Klipper on mini pc but would need a very long usb to reach printer and thought it wasn’t ideal.

USB has some serious length restrictions, but you can either add a repeater (which in this context, is probably a hub) or use an optical cable with transceivers at each end, something like this.

The hub is probably cheaper if you just need one extra hop.