USB-C Sensor Node
Worked for 4 mins 25 sec
Implemented the schematic for the USB-C powered Wi‑Fi/BLE temperature/humidity node. It uses a SiWG917 Wi‑Fi/BLE 5.4 module, SHT41 T/RH sensor, USB-C sink input, TPS25940 true reverse-blocking eFuse with OVP/UVLO/OCP/soft-start, MP28301 3.3 V buck regulator, ESD protection, reset/ISP/SWD debug, I2C pull-ups, and status LED.
Created project files:
Open items:
- PCB layout/routing is not done yet, so airwire DRC errors are expected.
- Generic passives still need final manufacturer MPNs before manufacturing export.
- Layout must enforce the SiWG917 antenna keepout and thermal isolation around the SHT41.
Suggested next steps:
- Set board size/stackup and move into PCB placement.
- Place U1 at the board edge with antenna keepout and U4 away from heat sources.
- Route power, buck, I2C, SWD/UART, and USB-C protection paths.
- Assign final passive MPNs and run full DRC/manufacturing checks.
Start Auto-Layout
Thought for 3 sec
No PCB analysis or auto-layout changes could be applied because this account currently has no available ACUs, so AI execution is unavailable.
Remaining work:
- Inspect the existing PCB for placement status, overlaps, airwires, and routing.
- Run component placement if needed.
- Route remaining nets if needed.
- Apply results and verify DRC, antenna keepout, USB-C power path, and SHT41 thermal isolation.
Inspect PCB status
Review USB-C layout
Check sensor isolation
Review manufacturability
