USB-C Sensor Node


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:
  1. Set board size/stackup and move into PCB placement.
  2. Place U1 at the board edge with antenna keepout and U4 away from heat sources.
  3. Route power, buck, I2C, SWD/UART, and USB-C protection paths.
  4. Assign final passive MPNs and run full DRC/manufacturing checks.
komponen pada layout belum ada jalur pcb nya
Benar—komponen sudah ditempatkan, tetapi jalur PCB belum dirouting sehingga airwire masih terlihat. Saya belum dapat menjalankan autorouting sekarang karena ACUs akun sedang tidak tersedia; tahap tersisa adalah menetapkan aturan lebar jalur/clearance, membuat breakout USB‑C D+/D−, merouting daya 5 V/3,3 V dan sinyal, menjaga keepout antena SiWG917, lalu menjalankan DRC hingga bersih.
Atur aturan routing
Rute USB dan daya
Jaga area antena

USB-C WiFi BLE TH Sensor

USB-C WiFi BLE TH Sensor thumbnail