Sorry totally missed this post yes i got it going as you described i didnt install the buster version was that a mistake? im noticing the new version debian 11 is basically ubuntu should i redo it with buster? Everytime i make a change i just copy back over the device tree. I'm wondering now if the original futurebit image is fine as it appears to run alpine linux under the good with ubuntu overtop i may be wrong here.

I like the idea of a SBC so can add a battery backup to keep it going on cellular just incase. My futurebit node has 70-80 peers on average shipping off 14-20 gigs a day of served up blocks. whether it helps or not i have no idea i would assume so it seems node should be more important than miners as they are far less of them in residential as i can tell anyways.

ive given up on making any kind of break even on mining im focusing on the software portion and learning C i always neglected it the past 20 years. When i think of arm i think of software based hardware so when i think of bare metal its a full blown pc. maybe not proper terms.