BCOTI Control Board Design
Thought
Work completed
- Updated project description with relevant hashtags (#2layer, #BCOTI, #compact, #USB, #ESP32C3, #diffpair)
- Added system architecture mermaid diagram
- Placed and configured components:
- Completed all net connections per plan
- Updated design properties:
- ERC Review Findings; set voltage rating status for C1 and C2
- DRC Review Findings
- Connector Clearances
- Footprint extents (J1–J5, SW1)
- Computed Max_Connector_Clearance
- Computed and set Board_Width and Board_Height
- Resized PCB layout to calculated outline
Work not done (requires manual or advanced layout steps)
- Configuring full/near-full ground pour with stitching vias
- Defining 2-layer stackup and DRC rules (6–8 mil trace/space; 10–20 mil for 5 V)
- Placing edge connectors and optimizing component placement for cable flow and EMI
- Routing USB D+/D– as matched-length differential pair
- Routing 5 V and GND as short, wide traces with dedicated return paths
- Adding silkscreen labels for components and nets
- Running continuous DRC
Success criteria review
- Reproduced all functional modules with exact net/pin mapping: ✅
- USB D+/D– routed as matched-length differential pair: ❌
- Compact board with connectors at practical edges: ❌
- Robust 5 V/GND distribution with ground pour: ❌
- Test/programming pads included: ✅
- DRC completed with all rules met: ❌
Next recommended step
Proceed with PCB layout configuration and routing:
- Define the 2-layer stackup and apply DRC rules.
- Add ground pour on bottom layer with stitching vias.
- Place edge connectors and ESP32-C3 module for optimal routing.
- Route USB differential pair, power, and ground nets.
- Add silkscreen labels and run continuous DRC.
