16. ARCHITECTURE AT A GLANCE
┌──────────────────── 2014 RAM 1500 ────────────────────┐
│ DISPLAY: Phoenix 9.7" (later) / no screen Phase 1 │
│ Chrome kiosk → Flask, multi-screen via WebSocket │
│ INTERNET: Cudy LT18 (Keepgo SIM, OpenWrt, locked LTE) │
│ │
│ TIER 1 — OptiPlex 5080 (hibernates parked) — THE BOSS │
│ Qwen3 4B + Porcupine ("Hey JARVIS") + whisper.cpp │
│ + TTS (Piper/Kokoro) + RAG (ChromaDB) + CAN + Flask + cams │
│ S24 Ultra BT→OptiPlex→AUX→Uconnect (PipeWire duck) │
│ Heavy reasoning → Fireworks API (DeepSeek V3) │
│ Wakes via: door/proximity → Pi 3 B+ MQTT → WOL │
│ │
│ [ TIER 1.5 — Pi 5 + Hailo-8L, ~1yr out ] │
│ Always-on camera appliance: record/restream/detect │
│ │
│ Pi 3 B+ (always-on ~2-3W) — broker + wake-coord + │
│ STATUS/CONTROL PWA (phone, 5080-off) + tele-log + │
│ Tailscale + Wolfbox pull, NO audio [Pi4=future] │
│ │
│ TIER 0 — ESP32 (always-on, 12V) — TWO boards (Opt. B) │
│ FRONT Waveshare 8DI-8DO + BED Waveshare 8DI-8DO │
│ (Ethernet between; each its own OTA ESPHome). DO → │
│ Bosch relay panels; bed board runs the combiner + │
│ camp loads locally. No onboard relays. WROOM spare. │
│ │
│ GreenYi tailgate → radio backup (instant lines) │
│ Net: Cudy LT18 (OWNED, router+Tailscale subnet rtr; │
│ GL.iNet fallback) + TP-Link LS108GP (PoE+) │
│ POWER (keystone): Solar 400W → EPEVER MPPT → LiFePO4 │
│ → 12V→19V DC converter → OptiPlex (NOT inverter) │
│ DC-DC charger from alternator │
│ Sleep ladder: 0-7m S0 / S3 to 2hr / S4 / 3am maint / │
│ 24hr or low-batt → ESP32 hard-cut = 0W (§5.4) │
│ Thermal: ~80W box, software cutoff (§10) │
└─────────────────────────────────────────────────────────┘
⟷ Tailscale (truck ⟷ home RAG ⟷ Hetzner ⟷ phone ⟷ cyberdeck)
⟷ HaLow 915MHz (off-grid, carries IP + internet) [Phase 2]
┌──────────── Home ────────────┐
│ Z440 #1 (Ubuntu) Qwen3 14B Q8 + ChromaDB ⟷ NAS (8TB) │
│ Dell Precision: A5000+A4000, Civil 3D, ULTIMATE_RAG │
└──────────────────────────────┘