I use a CHUWI GBOX mini pc, its awesome. 12vdc input low power and fanless. I use a high speed usb3 wifi adapter and have a script that runs on startup to create its own wifi network. Its run SGP and PHD2 no probs. I can then remote into the pc with my phone to control from anywhere.
https://www.amazon.com/CHUWI-Desktop.../dp/B07F15PBDY