USB-C WiFi BLE Sensor Design

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Completed so far:
  • Renamed the project to USB-C WiFi BLE Sensor Node.
  • Updated the project description.
  • Created the initial Project Specification file.
  • Confirmed the schematic started empty.
  • Sourced and added the main components:
    • ESP32-S3-MINI-1-N8 Wi‑Fi/BLE module
    • SHT40 temperature/humidity sensor
    • USB-C receptacle
    • USB input protection/current-limit IC
    • USB-C port protection IC
    • 3.3 V buck regulator
    • USB D+/D− ESD protection
    • BOOT and RESET buttons
    • Status LED
    • 5 V, 3.3 V, and GND test points
Still remaining:
  • Add support passives: decoupling capacitors, I2C pull-ups, USB-C CC pull-downs, regulator feedback/boot/input/output components, LED resistor, boot/reset RC parts.
  • Query datasheets for every active IC before wiring.
  • Wire the USB-C input, protected 5 V path, 3.3 V regulator, ESP32, SHT40, USB data, buttons, LED, and test points.
  • Run schematic checks and fix ERC issues.
  • Create firmware, board bring-up, and regulatory documentation.
  • After schematic validation, ask for approval before moving to PCB layout.
Wire USB-C power
Check datasheets
Add support passives
Run ERC/DRC
Document requirements
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USB-C WiFi BLE Sensor Node

USB-C WiFi BLE Sensor Node thumbnail
USB-C powered consumer environmental sensor node with ESP32-class Wi‑Fi/BLE connectivity, digital temperature/humidity sensing, protected 5 V input, and low-power 3.3 V electronics.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$3.66–$5.61

Digi-Key

$4.98–$5.10

HQonline

$7.77–$7.87

LCSC

$7.61–$7.73

Mouser

$14.48

TME

$0.00

Verical

$1.78–$4.21

Controls