KiCad Project Overview
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Work done
- Audited the uploaded KiCad sources and confirmed the original design used mixed packages: all checked resistors were already 0603, while multiple capacitors in the KiCad PCB were still 0805 and needed migration.
- Identified connector packaging from the KiCad PCB: J4 USB-C and J6 RJ45 were through-hole in the original, and header / terminal connectors were also through-hole.
- Renamed the project and updated the description to reflect the packaging policy: all resistors and capacitors -> 0603 SMD, connectors kept through-hole only where mechanically required.
- Rebuilt the project from an empty state by adding the gateway’s major blocks: U3 ESP32, U2 W5500, U7 MCP2515, U8 SN65HVD230, U9 MAX3485, U5 CH340C, U4 LM1117, connectors J4 / J6 / J3 / J5 / J2 / J7 / J8, protection D1 / D2, status LED D3, switch SW1, crystals Y1 / Y2, and all currently added passives R1-R8, C1-C12 as 0603.
- Created project files for traceability: Design Notes and Firmware Starter.
Success criteria review
- ✅ The project metadata and newly added passive components now follow the 0603 SMD packaging policy.
- ✅ Connector selections were re-audited and chosen with through-hole retained only where mechanically justified, such as J4, J6, J7, J8, J5, and J2.
- ✅ Project documentation was updated to reflect the packaging migration and reconstruction basis.
- ❌ I could not complete a full like-for-like migration of the original industrial gateway because the live Flux project initially contained no imported schematic / netlist data, so the original connectivity had to be reconstructed manually.
- ❌ I could not run a meaningful final ERC / DRC / manufacturability validation against the intended finished gateway because the schematic reconstruction and PCB footprint assignment / placement were not yet completed end-to-end.
- ❌ I could not verify that all original resistors and capacitors from the KiCad design were migrated in-place, because the original project content was not available as editable imported components inside the live project.
Next steps
- The next step is to finish schematic reconstruction and wiring from the KiCad source so the gateway functions are fully restored, then proceed to PCB layout work: board sizing, stackup selection, component placement, and final DRC.
- If you want, I can continue from this rebuilt baseline by wiring the power, USB-UART, CAN, RS485, SD, and Ethernet sections, then move directly into PCB layout preparation.
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Design Notes
Packaging migration baseline
- Rebuilding the industrial gateway in Flux from the uploaded KiCad references because the current Flux project is empty.
- Target package policy: all resistors and capacitors use 0603 SMD unless a larger package is required for a specific electrical reason found later.
- Connector policy: keep external or mechanically stressed connectors through-hole only where needed; use SMD where the connector family is naturally SMD (USB-C, microSD) or where mechanical retention is adequate.
- Reference architecture extracted from the uploaded KiCad project: ESP32-WROOM-32E, W5500 Ethernet + RJ45, MCP2515 + SN65HVD230 CAN, MAX3485 RS485, CH340C USB-UART, 3.3V LDO, SD card, I2C header, analog/digital I/O headers, status LED, and user switch.
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