mikkeli
3b010189df
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ
27 lines
1.1 KiB
Markdown
27 lines
1.1 KiB
Markdown
---
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type: default
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---
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# Initial plan
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## Order
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1. MQTT client, subscribing to the retained vehicle topics. Text readout only —
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prove the contract before drawing anything.
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2. Gauges.
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3. Moving map: MapLibre against the PMTiles basemap served by the Orin, with the
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position from `yukart/gnss/fix`. No routing involved.
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4. Guidance from `yukart/nav/guidance`, once [svc-nav](gitea:yukart/svc-nav) publishes it.
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A moving map with position, heading and trace is most of the value in a car and
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needs no routing engine at all. Routing is the expensive last fraction.
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## Open
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- **Transport.** Over USB the tablet has an IP link via RNDIS, so it can reach the
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broker directly. Whether it should, or should go through `svc-gw`, is decided in
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that repo — see its initial plan.
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- **CJK labels.** MapLibre cannot ship Japanese glyph sets as SDF ranges. Local
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font rendering must be configured, or labels will be slow or absent.
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- **Sunlight.** A typical tablet is unreadable through a windscreen in daylight.
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This is a hardware problem, but the UI should not make it worse.
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