Intro:
MAJOR EDIT IN PROGRESS!!!!!
This is a multipart article wrapped into one. We'll use the Orange PI Zero 3 as a DDNS update client, Pi-hole server, and as a WireGuard server. This will assume you've read and setup the pi already. (INSERT ARTICLE HERE ABOUT GENERAL SETUP). We'll load some cool tools for administering the network as well.
This entire thing started when you could no longer buy a Raspberry PI for $35.
Usually NVR camera systems will include some sort of dynamic dns service or allow you to use your own update URL. I had the "pleasure" of working on a Speco NVR unit. If you've never heard of them stay away, they're akin with the no name systems sold in big box stores. Five minutes with this thing and you'll want to throw it out a window. There's tons of standard features that are nowhere to be found on these units. I've seen cheaper noname brands that include more functionality.
This particular Speco VX NVR only includes their own ddns service (which does not work) and contains no alternative options. They do not give you the option to use popular services such as "no-ip" or "dyndns". Usually you can get away with using the "dyndns" update url with your own service. Nope, not this time.
In comes the Raspberry PI, great idea but still (10/2023) ridiculously overpriced by scalpers, so this is a no go. Orange PI looks like a viable alternative on paper at a quarter of the cost and is currently in stock.
I'm using the Orange PI Zero 3 for this (tested with 1 & 2gb version). Amazon had them delivered the same day.
Since there are no commercial cases available I have modified another design to include a spot for velcro and or hidden drywall screws. I've also modified it to take the el cheapo Amazon stainless metric socket cap screws that have a splined design on the cap side. My local hardware store has the smooth side version (18-8) which is why they fit easily on the first print.
I can only find two types socket cap screws from McMaster-Carr that fit the bill for this design. One has a smooth side and is labeled " 18-8 Stainless Steel Socket Head Screws" and the other " Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws" is overkill for this design but I suspect it's what the Chinese have sloppily copied and are reselling on Amazon.
I believe the original designer of this case used the CAD files in Fusion 360 of the 18-8 screws and not a physical measurement of the Amazon specials.
I'm in the process of redesigning this case from the ground up to make the installation easier.