USB-C WiFi Sensor Node
Worked for 4 mins 28 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
I can’t run PCB analysis or auto-layout because this account currently has no available ACUs, so AI execution is unavailable.
Current state: the schematic is complete, but PCB placement and routing remain unfinished. Once ACUs are available, the next pass should inspect the board and DRC, optimize placement—especially the SiWG917 antenna keepout, SHT41 thermal isolation, USB-C/eFuse/buck power path—and then route remaining airwires and verify DRC.
Review PCB status
Check critical layout
Create layout checklist
