JustStan cb35e6e31a Redesign OSD circuit and fix 3D model library paths ...

OSD redesign based on Jason Young's (RPi) proven topology:
- Replace GS8052 dual op-amp with dedicated ICs: TLV3201 comparator,
  SN74LVC1G3157 SPDT mux, TLV9061 non-inverting buffer, SDM02U30LP3
  Schottky for DC restore
- Add chroma filter (680R+470pF), AC coupling (1uF), resistor divider
  pixel level (12k/3.9k/1.4k), gain-2 buffer (470R/470R)
- Fix C66 footprint 0201->0402 for 1uF cap
- Assign correct LCSC part numbers for all 13 OSD passives

Library fixes:
- Add new footprints: X2SON-4, X2SON-6, X3-DFN0603, SC-70-6,
  SOD-523, SOT-23-5, MouseBite for local OSD components
- Add matching 3D models (step+wrl) for all new footprints
- Fix 8 footprints with broken 3D model paths in lib.pretty
  (/.3dshapes/ -> ${KIPRJMOD}/lib.3dshapes/, remove double hardware/)
- Fix 5 broken 3D model paths in PCB file
- Add symbols for TLV3201, SN74LVC1G3157, TLV9061, SDM02U30LP3
- Add datasheets/ and image (1).png to .gitignore

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-15 14:55:15 +01:00

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