Access Reader Design
Access Reader — важная правка по РАЗМЕЩЕНИЮ разъёмов (ты на placement): ВСЕ разъёмы и клеммники ставь ПО КРАЮ платы, ориентированными наружу, с зазором под вставку кабеля/штекера. Сейчас RJ45 Ethernet стоит ПОСЕРЕДИНЕ — в него физически не воткнуть провод, перемести на кромку. На край разъёмной стороной наружу: RJ45 (Ethernet), клеммник входа 9–32В DC, клеммники 2 реле (NO/NC/COM), сервисный USB, клеммники/хедеры RS-485, Wiegand и 2 входов, разъём/шлейф GM861 (QR), 2-pin разъём катушки 125к (J101). Вход кабеля не должен перекрываться компонентами, крепёжными отверстиями или соседними разъёмами (проверь высоту/вылет коннектора наружу за контур). Зону поднесения карт (антенны 13.56/125к) держи свободным краем без разъёмов. Это правило — жёсткое: неудобный доступ к разъёму = брак. Обнови placement и manufacturing notes, отметь этот constraint в ready-to-export чеклисте.
Worked for 4 mins 30 sec
Created a project doc
Access Reader Factory Package Run — 2026-07-09
Full first Rev A prototype preserved: PoE AG9905-MTB, RJ45/W5500 Ethernet, 9-32 V DC LMR16020 branch and ESP32-S3 Wi-Fi are populated. Criti...
Сделал автономный проход и экспортировал артефакты; все ссылки на Gerber+drill, BOM, BOM с DNP-колонкой и Pick-and-Place собраны в Access Reader Factory Package Run — 2026-07-09.
Что не удалось: пакет не order-ready — routing не завершён, DRC всё ещё показывает много airwires; stackup tool принял 4-layer, но readback показывает inner layers как Signal вместо GND/PWR; SS14 diode-OR работает как reverse-blocking fallback, но лучше заменить на ideal-diode/power-mux перед производством. Critical ERC по питанию/GND для W5500, USB ESD, LMR16020 и PoE/DC OR-ing исправлены, placement выполнен на 80×100 мм.
Fix stackup and routing
Fix stackup
Allow larger board
Finish routing
Replace diode OR
Audit exported files
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Factory-Ready Execution Strategy - Access Reader
User Direction
Build autonomously toward files that can be sent to a factory for PCBA/manufacturing. Keep the hardware compact, easy to implement and avoid fragile/complex processes where practical.
Engineering Interpretation
A first-pass board can be made factory-orderable, but a complete commercial access-control product still needs enclosure fit, RF antenna validation, firmware hardening and regulatory lab tests. To maximize first-pass success, Rev A will prioritize proven modules and simple supply/protection circuits over custom RF/PoE complexity.
Rev A Simplification Decisions
Table
| Area | Decision | Reason |
|---|---|---|
| ESP32 | Use ESP32-S3-WROOM-1-N16R2 module | Certified RF module, no bare RF design |
| PoE | Prefer ready isolated PoE 5 V module or proven PD module footprint over discrete flyback | Reduces isolation/layout/control-loop risk |
| QR | Use GM861-class scanner as a module via board connector | Avoid optical/mechanical sensor design on PCB |
| 13.56 MHz NFC | Keep CLRC663-plus path only if library/datasheet/antenna support is adequate; otherwise use module connector for EVT | Reduces antenna-tuning risk for first PCBA |
| 125 kHz LF | Prefer coil connector and tuning placeholders | Allows production tuning without respinning PCB |
| Relays | Use 5 V Form C relays with simple MOSFET drivers and suppression footprints | Reliable, easy to debug, dry-contact output |
| External I/O | Use terminal blocks and protection per port | Factory-friendly and robust for installers |
| PCB | 4-layer board, top components preferred, inner GND/power planes | Better EMI and simpler routing than 2-layer |
| SKU | Build one PCB with DNP options only where safe; avoid dual-input auto-selection unless necessary | Reduces backfeed and assembly mistakes |
Manufacturing Package Target
The target output package will include:
- Gerber/drill files for PCB fabrication.
- BOM with MPNs and notes for module/DNP/manual items.
- Pick-and-place/CPL file for SMT assembly.
- Assembly notes and bring-up/test plan.
- Firmware starter and pin map.
- Known limitations and tests the factory or lab must perform.
Non-Negotiable Reality Checks
- RF read distance and NFC/LF tuning cannot be guaranteed purely from CAD files; Rev A must include tuning options and test pads.
- PoE isolation must be checked in layout and by the chosen module/datasheet; no ad-hoc isolation assumptions.
- Regulatory approval cannot be produced by EDA export alone; documents can be prepared, but lab reports require physical prototypes.
- If a required MPN is not available in the Flux library and no reliable replacement exists, the design will use a connector/module interface or a documented equivalent rather than inventing a placeholder.
Execution Flow
- Source parts and pick the simplest manufacturable option for each block.
- Create GPIO allocation and update firmware pin map.
- Build schematic block-by-block and run ERC after each major phase.
- Size and lay out 4-layer PCB with RF/PoE keepouts.
- Route, DRC, fix, and export.
- Create final manufacturing/readiness report with all files and caveats.
User Direction
Engineering Interpretation
Rev A Simplification Decisions
Manufacturing Package Target
Non-Negotiable Reality Checks
Execution Flow
