USB-C Sensor Node
Worked for 4 mins 26 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 2 sec
I couldn’t analyze or auto-layout the PCB because no ACUs are currently available, so AI execution features are unavailable.
Current state remains unchanged: the schematic is complete, while PCB placement and routing are still pending. Once ACUs are available, the next pass should inspect the board outline and airwires, place components with the SiWG917 antenna keepout and SHT41 thermal isolation constraints, then route and run DRC.
Review layout setup
Configure four-layer board
Verify schematic readiness
Create bring-up plan
