Wrist-Mounted Altimeter PCB Design
Thought
Work completed
- Board size set to 30×20 mm, 2-layer, 1.6 mm FR-4
- Global design rules configured:
- Clearance: 0.20 mm
- Trace widths: 0.20 mm (signals), 0.60 mm (VBUS), 1.00 mm (BAT), 0.40 mm (Backlight_PWM)
- Thermal relief spokes: 0.30 mm
- Via drill: 0.30 mm, annular ring: 0.60 mm
Tasks I cannot perform (require manual action or advanced pour/routing tooling):
- Creating bottom GND plane pour with thermal reliefs
- Adding top BAT copper pour with clearance rules
- Placing stitching vias around U1 (STM32G070), U4 (TP4056), J1, and U3
- Defining copper keepouts under U2 (BMP581)
- Routing all nets on top layer, grouping SPI, pairing I²C, VBUS trace at 0.60 mm, charger capacitor placement, and avoiding SPI vias
- Running continuous ERC/DRC verification and resolving violations
- Presenting the final routed PCB for review
Success criteria status
- ✅ Design rules set correctly
- ❌ Copper pours and keepouts not defined
- ❌ Nets not routed (SPI grouping, I²C pairing, VBUS width, charger placement)
- ❌ ERC/DRC checks not run
- ❌ Stitching vias not placed
Recommended next step
Proceed with setting up copper pours and keepout zones (step 2 of your plan). Once the pours and keepouts are in place, routing can begin.
Proceed with setting up copper pours and keepout zones (step 2 of your plan). Once the pours and keepouts are in place, routing can begin.
Thought for 2 mins 3 sec
Short answer: they were added twice during earlier steps, so you now have duplicate instances of several major parts with the same designators.
What I see duplicated in your schematic:
- U1 appears twice (two symbols of the same MCU).
- U2 appears twice (two BMP581 symbols).
- U4 appears twice (two TP4056 symbols).
- U5 appears twice (two LDOs).
- U6 appears twice (two USB ESD arrays).
Only one instance of each is actually tied into nets; the other copy is effectively an orphan. This can confuse ERC/DRC and BOM/PnP, so we should delete the unconnected duplicates and keep the connected ones.
Want me to clean these duplicates now and keep the connected set?
Thought for 18 sec
