All component footprints have been updated:
- U1, U2 → SO-16_L10.0-W4.0-P1.27-LS6.2-BL
- U3, U6 → SOIC-14_3.9x8.7mm_P1.27mm
- U4, U5 → SOIC-16_L9.9-W3.9-P1.27-LS6.0-BL
- C1–C7 → C_0603_1608Metric
- R1 → R_0603_1608Metric
- SW1 → SW_SPST_Omron_B3FS-105xP
- J1 → PinHeader_1x02_P2.54mm_Vertical
- J2, J3 → PinHeader_1x08_P2.54mm_Vertical
PCB layout properties set:
- Size: 60 mm × 40 mm
- Stackup: Standard 4 Layer
- Trace widths: 10 mil (signal), 20 mil (power)
- Clearance: 10 mil
- Via: Ø0.6 mm, drill Ø0.3 mm
DRC run and missing-footprint violations corrected.