This portable computer is the Raspberry Pi alternative I didn't know I needed ...
The Facet FP is built around the standard RTK workflow: a receiver tracks signals from multiple GNSS constellations and bands, then uses correction data to refine its position solution in real time.
The ExpressLRS Backpack adds ESP-NOW–based wireless communication between ExpressLRS TX modules and compatible FPV hardware, allowing for remote configuration, control, and telemetry exchange.