USB-C Temp/Humidity Sensor Design
Thought for 2 sec
I can’t execute design work right now because the Flux run has no remaining credits, so I did not modify the project.
Current project state:
- Components: 0
- Nets: 0
- Schematic/layout: unchanged
- No parts selected or wired yet
What remains to be done once credits are available:
- Create the project specification for the USB-C powered Wi-Fi/BLE temperature-humidity sensor node.
- Select the wireless MCU/module, likely an ultra-low-power ESP32-C6/S3-class module or similar with 2.4 GHz Wi-Fi + BLE 5.x.
- Select a digital temperature/RH sensor, likely I²C, low-power, consumer-grade.
- Design the USB-C 5 V input stage:
- USB-C receptacle with CC pull-downs for default 5 V sink behavior
- Reverse-current / reverse-polarity protection
- OVP, UVLO, and OCP protection
- Input protection sized for 0.5–3 A USB-C sources
- Add power regulation from USB-C 5 V to the MCU/sensor rail, likely 3.3 V.
- Add required decoupling, boot/configuration resistors, programming/debug interface, reset, and any antenna keepout requirements.
- Verify all IC wiring against datasheets.
- Run ERC/review and fix violations.
- Create bring-up, firmware pin-map, and consumer regulatory documentation because this is a wireless consumer product.
- After schematic approval, move to PCB layout with antenna keepout and USB-C placement constraints.
Once credits are restored, I can build the full schematic first, verify it, and then pause before layout as required.
Create spec document
Recommend key parts
USB-C protection architecture
Estimate power budget
List schematic blocks
No schematic yet
Talk to Flux to get started.
