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electronics lab: enhanced psu

While doing the PoE related testing for this incident, it occurred to me that I never got around to sharing the files for a small modification to the popular RD6006 PSU.

While drafting this post, I discovered that there appears to be a newer version of the RD6006: the 6012. As far as I can tell, they’re in the same ‘family’ and have the same dimensions so the CAD and related model files below should work w/ the RD6012 just as they do w/ the 6006, but i can only ‘guarantee’ that the CAD and related model files below will work with the RD6006.

home lab: mini 'universal' patch panel

This is another brief “i made a thing!” posts.

Version 2

Update 2020-12-12: I outgrew version 1! I needed a few more ports and didn’t have much time… so I just scaled the part up to double the number of jacks. The links below and the thingiverse and prusaprinters links have been updated w/ the new STL files. Printing and attachment works exactly the same as with the 1x8 version. Rather than include the Fusion360 source, I have included a standard STEP file.

PoE at a distance caused terrible cat5 speeds

This is a quick post for made in the hopes that some poor soul in the future will find it and save themselves some time.

Background

I’ve been experimenting with a few different ways to surface various home automation controls in the appropriate place and at a good time. One prototype host is deployed behind a small LCD under some cabinets in a high traffic area. This host is a raspberry pi 4 with a PoE hat. It boots a very stripped down version of Raspberry Pi OS into a web browser running in Kiosk mode.

home lab: consolidating multiple PSUs

A while back, I traded writing salt states and managing systemd .service files wrapping podman for the ‘simplicity’ of running kubernetes in my home lab. Jury is still out on weather or not the switch was worth it.

The cluster is a hodgepodge of second hand Intel NUCs and other scavenged compute hardware i’ve collected over the past few years. Some of it runs on 12v, some of it on 19v. For each node, there’s a dedicated switch mode power supply. Each supply takes up an outlet and brings a bit of cable mgmt related clutter. The solution is consolidation.