Hello there. I must say- Amazing stuff here.
Just had a one question. My Riggs sometimes restarts and when they do, after restart they enter in bios because the USB isn't recognized. I have to manually replug USB and then it boots up again.
I have a AsRock h110 BTC+ board and a 3.0 16gb usb stick
I've had this bug too on the same boards, unfortunately you need to power cycle, or get an SRR to listen for a hearbeat and do it for you after it stops. (
https://simplemining.net/download/SRR/PDF/SRR-manual-2017-02-10.pdf)
Maybe others have a different solution, but for a remote location this one works reliably for me.