USB C WiFi BLE Sensor Node
Worked for 7 mins 17 sec
Created 4 project docs
Design Notes — USB-C WiFi BLE Environmental Node
Input: USB-C receptacle J1, 5 V sink-only, USB 2.0 D+/D- routed to ESP32-C3 native USB Serial/JTAG. USB-C configuration: R1/R2 = 5.1 kΩ Rd f...
Firmware Starter — ESP32-C3-WROOM-02-N4
MCU/module: ESP32-C3-WROOM-02-N4 Framework: Arduino on PlatformIO
Board Bring-Up Plan — USB-C WiFi BLE Environmental Node
Equipment: current-limited 5 V USB supply or USB power meter, multimeter, oscilloscope, USB-C cable, ESD-safe workstation, PlatformIO firmwa...
Technical Construction File — USB-C WiFi BLE Environmental Node
Draft, schematic-stage. FCC Part 15 intentional radiator integration using pre-certified module conditions.
Implemented the schematic for the USB-C powered Wi‑Fi/BLE temperature/humidity node and created the supporting project files:
Open items:
- PCB layout has not been started yet; airwires are expected until placement/routing.
- Generic passives/testpoints still need production MPN assignment before manufacturing export.
- Layout must enforce ESP32 antenna keepout and keep the SHT40 away from heat sources.
Suggested next steps:
- Set board size/stackup and antenna/sensor placement constraints.
- Place components with the ESP32 antenna at the board edge.
- Route USB, buck power, and I2C nets.
- Assign production MPNs for generic passives and test pads.
Create layout constraints
Assign passive MPNs
Run schematic review
Start PCB placement
Prepare layout intent
