yacht-circuit-evidence-20260907T1402Z Collect yacht circuit evidence and prepare distribution specification revision

• status: in_progress
• priority: P1
• owner: marine-research/session-20260907
• createdAt: 2026-09-07 14:02

Description

Collect manufacturer electrical schematics and manuals for recreational yachts, initially up to 24 m and now expanded to 50 m by user request, before analyzing circuit and input requirements or rewriting the distribution-module specifications. Cover lighting, navigation electronics, pumps, hotel loads, DC sources, AC supplies, and control/sensor inputs across sailing, motor and multihull examples. The user subsequently extended the design scope to a vehicle PDM lineup with 24-output / 125 A and 28-output / 200 A models plus external input expansion.

Acceptance: archive accessible primary documents with URLs, checksums and drawing/page locators; distinguish verified drawings from leads; define counting boundaries and identify coverage gaps; prepare a reviewable analysis/specification proposal. Do not change controlled product specifications during investigation.

ActiveForm

Integrated the user-authorized S32K314/LVDS prototype route into the selected split-module plan and matrices; documentation checks passed, while component selection and hardware/timing qualification remain open.

Dependencies

• blocked by: (none for evidence collection; specification changes require proposal approval)
• blocks: evidence-based Core, Sense and AC specification revision

Notes

• 2026-09-07 23:34: User selected separate main communication and additional I/O modules. Treat power outputs as functional I/O satellites, move external communication and normal system rules to COM-M, remove repeated 24 DI banks from power modules, and retain local protection/inhibit. Update current research matrices and make the main-controller failure boundary explicit; no additional architecture approval is required to document this selected direction.

• 2026-09-07 23:28: User requested an additional 28-output / 200 A model, an extensible vehicle PDM specification lineup and external input expansion. Extend the existing claimed research/design task with a vehicle-family proposal and explicit CAN input contract. Preserve marine evidence and controlled P01/P02 definitions; the 28-output variant is interpreted as the higher-capacity switching product.

• 2026-09-07 23:23: User requested a 125 A / 24-output power design. Continue the existing full-tier design task under its current claim. Interpret the envelope per module and retain separate PWM lighting and ON/OFF switching products; prepare current mixes, supply/input boundaries, concurrency examples and qualification conditions.

• User explicitly requested source collection first, followed by analysis. Full-tier investigation; no delegated agents.

• Existing uncommitted product and tracking edits were present at session start and must be preserved.

• RESEARCH-008 / PLAN-024 remains a separate pending platform architecture decision; do not assume its proposed 46-channel envelope is validated by vessel demand.

• 2026-09-07 14:15: Source-collection investigation completed: ten PDFs, six qualified vessel examples, 45 selected original pages with page map, SHA-256 manifest and a 16-row pilot panel schedule. Catalog. Draft analysis/specification plan. Quantitative vessel-wide analysis and specification revision remain outstanding; task stays in progress.

• 2026-09-07 14:17: Verification passed: all ten original SHA-256/page-count checks, all 45 extracted page mappings/text comparisons, 52-page pack rendering spot checks, pilot schedule totals (13 DC / 3 AC), local links, Markdown table structure and git diff --check. Temporary PDF tooling was installed only under the project temp directory and removed after use. No commit or push performed.

• 2026-09-07 16:32: Started the user-approved analysis stage under the existing claim. Product-specification edits remain outside the approved analysis scope.

• 2026-09-07 16:47: Analysis delivered: report and replacement matrix, 251 transcribed records and three companion CSVs. Protected positions, assigned final paths, feeders, charging paths, reserves and unresolved legend entries are separated. Physical-input budgets distinguish observed contacts from retrofit assumptions; no unsupported whole-boat total is claimed.

• 2026-09-07 16:47: Counts, current-class screens, local links, table/CSV structure, archive integrity and git diff --check passed. Analysis portion is complete; task remains in progress for the original requested specification revision, pending review of the now-concrete proposal. No commit or push.

• 2026-09-07 16:50: User requested an optimized module solution. Continue the full-tier task under the existing claim; compare module sizes, current classes, physical inputs and zone boundaries, then deliver a concrete architecture and reproducible allocation study. This refines the prior proposal rather than treating its 22/46-channel mix as approved.

• 2026-09-07 16:57: Delivered optimized module solution: common Core 22 with 6×30 A + 16×15 A / 24 DI / one supply domain / 100 A aggregate qualification target, plus Sense 8+8; heavy and essential paths explicitly retained. Reproducible study covers 151 assigned paths: 120 assigned across nine target nodes and 31 external. Uniform 16 requires 12 nodes; mixed 16+22 improves utilization but adds a power design. Proposal supersedes the previous S/M recommendation without changing controlled product files or PLAN-024 status.

• 2026-09-07 16:58: Optimization validation passed: all 151 selected source records conserved exactly once, 120 unique assigned slots within per-channel target classes, nine zone reserve budgets, CSV/table/link checks, two AC interface budgets and original archive integrity. git diff --check passed. No temporary dependency installation, commit or push.

• 2026-09-07 20:32: Applied the user clarification that illumination uses PWM and ordinary controls use ON/OFF. Corrected the proposed Core bank split to 8 PWM-capable outputs (2×30 A + 6×15 A) and 14 switch-only outputs (4×30 A + 10×15 A), still 22 total. PWM positions may serve ordinary loads in steady mode. Added per-path mode and capability fields: 27 proposed lighting-PWM groups and 93 ON/OFF groups. Reproduced the previous failure for 20 A lighting on a low-current-only PWM bank, then verified corrected high-current PWM allocation, source conservation, reserves, links/tables and git diff --check. Actual lamp compatibility remains unverified; controlled product specifications are unchanged.

• 2026-09-07 20:37: User prefers multiple specialized modules. Interpret this as a function-based family, not redundant parallel supplies: separate lighting PWM, ordinary switching, acquisition and low-current actuator/AC interfaces. Continue the existing full-tier solution-design task and verify allocations; the prior common Core22 is now a comparison alternative rather than the preferred architecture.

• 2026-09-07 20:40: Delivered the specialized module proposal: Light8 (4×20 A + 4×10 A PWM; 8 DI), Switch16 (4×30 A + 12×15 A ON/OFF; 16 DI), Sense8+8 and optional Control24 (24 low-current DO + 24 DI). Each has one independent DC feed. Retained heavy/essential assemblies remain explicit. Source-linked allocation preserves 151 paths: 9 Light8 / 27 PWM, 9 Switch16 / 93 ON/OFF, 31 external. S358 helm has one ordinary spare; current-class reserve limits and increased 18-node / 216-position footprint are explicit. The common-Core proposal is now marked as a historical alternative; controlled specs and PLAN-024 are unchanged.

• 2026-09-07 20:47: User challenged the Light8 sizing and requested electrical evidence for yachts up to 50 m plus typical small-boat lighting circuit quantities. Expand research coverage to 50 m and reopen lighting sizing: distinguish protected feeds, independently switched/dimmed groups, fixtures and controller addresses. The eight-channel module remains an unvalidated candidate; existing derived zone allocations do not establish complete lighting demand.

• 2026-09-07 20:57: Delivered lighting demand correction and 50 m review. Five new original builder PDFs / 174 pages archived; 28-page extract pack and page map created. Confirmed small-vessel panel feeds are not dimmer counts: S358 has 11 illumination/backlight groups in operation text; two older Bertram cabin sheets have 23 local switched groups. Three-cabin 26–29-group design example is explicitly synthetic. Withdrew Light8 as a frozen recommendation and qualified earlier feed-only node allocations. Full 45–50 m lighting schedules remain missing; no new whole-vessel total is invented.

• 2026-09-07 20:58: Verified five original hashes/page counts, 28 mapped extract pages, 37 group records, 26-group scenario arithmetic and links/tables. Render comparison found 24 exact low-resolution matches and four Azimut pages differing by at most 1/255 per sample. Extracted text has soft-hyphen normalization and two ARK displacement-symbol differences; the latter pages render identically. git diff --check passed. Three Maretron PDFs were web-readable or discoverable but local downloads returned 403; recorded as failed acquisitions, not archived files. Temporary PDF tools/review renders cleaned; no commit or push.

• 2026-09-07 23:25: Delivered 24-channel / 125 A power proposal: Light24 with 20×5 A + 4×10 A PWM; Switch24 with 8×5 A + 12×15 A + 4×30 A ON/OFF. Each targets 125 A aggregate continuous at a proposed 40 °C enclosed qualification condition, one DC source input and 24 DI. Channel sums, concurrent-current examples, nominal power/loss arithmetic, links, tables and git diff --check passed. No physical hardware rating is validated; old allocations remain historical. No commit or push.

• 2026-09-07 23:33: Delivered vehicle PDM family and input expansion with three PDM and two input-module CSV records. Added S28-200 (8×5 A + 12×15 A + 8×30 A), retaining 24 DI and one source input across the PDM family. Defined CAN acquisition, PDM-local bindings, stale-input handling, a proposed eight-node qualification envelope and the existing Sense integration gap. Verified channel/current and expansion arithmetic, shared pulse-input accounting, power-loss/traffic estimates, document structure/links and git diff --check. No hardware/firmware/timing validation, commit or push.

• 2026-09-07 23:39: Delivered split vehicle PDM architecture: COM-M plus three power-output and two acquisition variants. Moved external CAN and normal rule execution to COM-M; removed 24 ordinary DI and one CAN interface from each power module; retained local protection and one dedicated hardware-inhibit input. Reconciled the expanded example to 40 DI + 8 AI. Current CSVs, current/channel arithmetic, dedicated inputs, links/tables and git diff --check passed. Main-loss behavior and the invalidated prior traffic/latency assumptions are explicit. No hardware/firmware validation, commit or push.

• 2026-09-08 01:38: User requested RS-485, M12, SPI, three CAN interfaces and RJ45 on the main controller. Updated the selected split architecture and controller matrix: CAN1 external vehicle, CAN2 power nodes, CAN3 input nodes; four proposed M12 receptacles (three CAN plus one RS-485), one RJ45 10/100 Ethernet target, one internal 3.3 V SPI expansion bus with two chip selects, and retained USB/wake. M12/RJ45 interpretations and provisional electrical choices are explicit. Verified interface/controller/connector accounting, unchanged satellite resources, diagram routing, links/tables and git diff --check. Hardware pinout, timing, isolation and electrical capability remain unvalidated. No commit or push.

• 2026-09-08 01:46: User requested committing existing work before reviewing the attached S32K148 implementation guide. Committed the PDM research/source/specification baseline as cd6e87f, excluding unrelated product changes and their changelog entries; no push. The staged whitespace check exposed CSV CRLF, corrected to LF with generator settings and refreshed archive checksums before the final amended commit. Both historical allocation scripts reproduce without further changes.

• 2026-09-08 01:46: Reviewed the attachment text/tables/architecture image and delivered S32K148 guide assessment. Findings: optional dedicated fast I/O complements CAN; three native UARTs conflict with three fast links plus ordinary RS-485; USB needs a separate implementation; 8-bit payload/10 µs scope does not establish full PDM updates. Verified CRC vector, serialization/current-scope reasoning, references, tables and git diff --check. New review and tracking changes are after the requested baseline commit; no hardware or timing tests were performed.

• 2026-09-08 01:52: Reviewed the second attachment, S32K314 / 50 MHz LVDS V1.0, and delivered architecture assessment. Distinguished its ten 16 DI / 16 DO nodes and 3 m path from the earlier 10 m UART guide. Verified NXP SPI/resource constraints, Lattice memory/PLL/order-code distinctions and TI power-stage delay; recalculated scan, host transfer, diagnostic and event budgets. Recommended optional fast-I/O evaluation, remote-MCU/interface closure and 640-first prototype margin rather than an automatic CAN/product-matrix replacement. Links/tables and git diff --check passed; no physical/RTL validation, commit or push.

• 2026-09-08 03:47: User explicitly requested incorporating the S32K314/LVDS findings into the plan. Updated the selected split architecture with optional COM-M-F (S32K314 + LAMXO2-640HC-5TG100E candidates) and FIO-D16O16, retaining the ordinary CAN family and all requested main interfaces. Added separate host/expansion SPI accounting, ten point-to-point ports, a 3 m / 50 Mbit/s target boundary, scan-versus-host/load timing, command freshness, and resource/RTL/one-node/ten-node acceptance stages. Updated controller and I/O CSV matrices and linked the review decision. Verified CSV structure, interface/channel/current counts, timing arithmetic, local links, Markdown tables and git diff --check. Remote MCU, output ratings, logic fit and physical timing remain unqualified; no controlled marine specification or new commit.