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PROJECT SPECIFICATION: RPI AUTOMOTIVE BRAIN

Attribute Specification
Codename The Safari Core / Muffin-Net Node 01
Role Central Hub (Comm-Link: CAT, ANGUS, MTHR8R41n)
Architecture SOM (System on Module) + Industrial Carrier
Aesthetic Cyberpunk Safari (ASA Enclosure, Braided Loom, Exposed Heat-Sinks)
User Profile Master System Controller (Dashboard Integrated)

1. HARDWARE MANIFEST & SEGMENTATION

Segment A: The Core ("The Processor")

  • Role: High-level Logic, Ecosystem Coordination, and muffinland.wiki hosting.
  • Compute Module:
    • Unit: Raspberry Pi CM4 (CM4104032).
    • Specs: 4GB LPDDR4 / 32GB eMMC / Wi-Fi & BT 5.0.
  • Storage (High-Speed):
    • Unit: Drevo X1 60GB SSD (Inventory).
    • Interface: M.2 Key-B via Carrier Board.
  • Thermal Management:
    • Unit: Waveshare CM4-HEATSINK.
    • Fabrication: Natural ASA 3D-printed shroud with dual 30mm fans.

Segment B: The Carrier ("The Interface")

  • Role: Power Regulation & Master I/O.
  • Main Board: Oratek Tofu.
  • Power System (Automotive Grade):
    • Input: 7.5V to 28V DC (Fused Ignition Rail).
    • Connector: 3.5mm Industrial Terminal Block.
  • Expansion Ports:
    • Video: 1x Full-size HDMI (Dedicated to 7" Primary Display).
    • Camera: 22-pin MIPI CSI (Forward-facing "Pilot" cam).
    • USB: 3x USB 2.0 (Interface for peripheral input).

Segment C: The Bridge ("The Senses & Comms")

  • Role: Cross-Device Communication & Telemetry.
  • Local Display: 7" Touchscreen (DSI or HDMI interfaced).
  • Communication Matrix:
    • CAT Link: Bluetooth LE / Wi-Fi (Telemetry relay to wrist).
    • ANGUS Link: Local Network (Task assignment / Workshop sync).
    • MTHR8R41n Link: Home Server Sync (Data backup when parked).
  • Networking:
    • LTE: Planned M.2 4G Module (Remote access & Muffin-Net Uplink).
    • SIM: Micro-SIM slot (External access).

2. FABRICATION STRATEGY (The "Standard mm" Method)

  • Mounting & Footprint:
    • Board Dimensions: 90mm x 90mm (Carrier) / 55mm x 40mm (CM4).
    • Mounting: 4x M3 corner holes.
  • Display Integration:
    • Bezel: Custom Natural ASA frame for the 7" screen.
  • Enclosure:
    • Material: Natural ASA.
    • Mounting: Steel bracket welded to dash sub-frame.

3. WIRING & PIN MAP

  • Power Delivery: * Wired to 12V Accessory rail; Tofu handles voltage dips during engine crank.
  • Communication Bus:
    • I2C: Dedicated to local RTC and environmental sensors.
    • UART: Reserved for secondary hardware bridges or diagnostic port.

4. SAFETY & LOGIC PROTOCOLS

  • Ecosystem Handshake:
    1. Ignition ON -> CM4 Boots.
    2. Automatic handshake with CAT (Wrist Terminal).
    3. Check status of ANGUS (if within workshop range).
    4. Initialize 7" Dashboard UI.
  • Muffin-Net Protocol: *