Ask HN: Good forum for hobbyish ARM(industrial) design discussions and advice?

Have some embedded, board level integration experience, nothing really - getting simple boards masked for low density shit. Broadly interested in learning about the next level in ARM board level design (call it cubbie board esque). But I've zero luck finding such a place - it's either raspi/arduino folks (not a diss), folks mostly repurposing android mobile or net tops for software, or the people who are really on the supply side - either they are talking about building the newest open mobile designs with the cheapest bom in chinese i can only half follow, or they are the real deal talking about modular soc components and electronic interface issues with off soc component count vs oem ability to implement. And high cost IP.

I am hoping to for something in english (ha! I'll survive) or just anything that might be suitable. An HN sorta thing where people often have a clue would rock, but the big missing piece is picking soc->minimal reference board revisions->build or source some custom stuff to give the arm some supervoisor like qualities on the x86.

To balance a zero content post, I provide my rough plan to amuse to reader. Basicially I want to combine a SFF server (think HP microserver or so slash less for mini. Most are essentially low end x76 roll your own nas that make do with 150w and 4 sata bays, 2 dimms and 1 eth.

I want to see what I can do if I meld that kind of platform together with a few low poer arm linux servers all in one case. I imagine the arm sections being able to utilize some kind of pci/pci or similar bridge as well as monitoring, reset, ipkvm etc that could leave them as super programmable debuggers more or less, that could always easily act as low power satndins for much of the traffic that wakes up your typical low use server - ntp, ping, mild file serving, ldap, etc. Anything harder and they could provide a superior holding pattern as the main box woke up from deep sleep.