f0b8c956c5
Fix J1 orientation to 90° — mating face now faces left board edge
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Analysis: GCT USB4105-xx-A 3D model has USB-C opening at Y=+3.73.
At 0°: mating face +Y (UP), at 90°: -X (LEFT), at 180°: -Y (DOWN into board).
For left-edge connector facing outward: rotation=90° is correct.
Rotation 180° pointed the port DOWN into the board interior — physically wrong.
2026-06-21 16:33:47 +03:00
11c2d96561
Rebuild: fix J1 orientation (90°), re-place all components, Freerouting orthogonal routing, 84 GND vias
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- J1 rotated 90° so USB-C mating face faces left board edge
- All 23 components re-placed with proper spacing (8 courtyard overlaps remain — all ESP32 keepout)
- Freerouting v2.2.4: 21/25 nets autorouted cleanly
- 3V3/VBUS_SENSE manually routed on B.Cu for remaining 4 nets
- 84 GND stitching vias (grid + around_refs)
- DRC: 158 violations (0 tracks_crossing, 2 shorts, 84 via_dangling zone-fill dependent)
- Board 65x35mm, 2-layer
2026-06-21 12:19:07 +03:00
a978205c25
Design review fixes: route 4 unrouted nets, ERC 0 errors, add fiducials+MPNs+silkscreen
2026-06-20 20:43:43 +03:00
ef2514c332
USB-C PD board with ESP32-S3
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Complete initial design:
- CH224K PD sink controller (custom corrected symbol)
- USB-C receptacle (16-pin USB2.0)
- P-Channel MOSFET VBUS switch
- LD1117S33 3.3V LDO regulator (800mA)
- ESP32-S3-WROOM-1 module
- 15 nets: VBUS, VOUT, 3V3, GATE, CC1/CC2, USB_DP/USB_DN
- 5.1kΩ CC pull-down resistors
- CFG1/CFG2 for PD voltage selection
- Input/output decoupling capacitors
2026-06-20 17:31:20 +03:00
