Work done
- Renamed the project to Dual PCA9685 Servo Controller and updated its description for the 4-layer Raspberry Pi 5 / STM32 Nucleo / dual PCA9685 servo controller.
- Created the Design Notes project file capturing the approved requirements and assumptions.
- Confirmed the schematic is currently empty: 0 components, 0 nets.
- Identified suitable library candidates for key parts: PCA9685PW,118 / PCA9685PW and TXS0102DCTR/DCU/DQE variants, plus generic resistor/capacitor parts.
Success criteria review
- ❌ Schematic complete and wired: not completed; no components or nets have been added yet.
- ❌ 4-layer stackup and high-current 20A / 2 oz layout rules: not completed.
- ❌ Component placement/routing/ERC/DRC verification: not completed.
Next steps
Once execution can continue, the remaining work is to add and wire the schematic, confirm TXS0102 pull-up compatibility, configure the 4-layer stackup and 20A power-distribution rules, then proceed to PCB layout with board sizing, placement, routing, and ERC/DRC cleanup.