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Note the LTE/GNSS hat is car-unit only

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The hat sits in a custom enclosure on the car Orin and isn't swapped
to the development unit, so modem and gpsd testing happens on the car
unit and gnss development elsewhere runs on its mock input.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mikkeli
2026-10-08 09:59:08 +09:00
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@@ -156,6 +156,10 @@ Two Orin Nanos, and they have different jobs:
| Development Orin (`mikkeli-orin-nano-2`) | Build, CI runner, bench testing. Always powered, on the LAN |
| Car Orin (`mikkeli-orin-nano`) | Deployment target only |
The SIM7600 LTE/GNSS hat lives in the car unit only — its custom enclosure doesn't
move between units. Anything touching the modem or gpsd is tested on the car unit;
on the development unit, `gnss` runs against its own mock input (decision 19).
⚠ **The guarantee is version parity, not architecture.** An aarch64 binary built
on a newer userland still fails to load on an older one. A JetPack or Ubuntu
upgrade applied to one unit and not the other reintroduces the problem, silently