Temperature and Humidity Sensor Design

hardie

hardie

Make me a temperature and humidity sensor node with Wifi and Bluetooth, powered by USB-C (5V) for consumer use.
It should be a low-power environmental node with a digital T/RH sensor, ultra-low-power MCU with Wi-Fi + Bluetooth (dual-radio) — 2.4 GHz 802.11 b/g/n plus BLE 5.x powered by USB-C (5 V) — USB-C receptacle 5 V default; include reverse/OVP/UVLO/OCP protection and plan for 0.5–3 A sources.

flux

I’m blocked from making project changes because execution credits are unavailable, so I could not add components, wire the schematic, run review, or create project files.
Nothing has been modified in the project yet. To complete this design, the remaining work is:
  1. Rename/describe the project for a USB-C Wi-Fi/BLE temperature-humidity sensor node.
  2. Select a dual-radio low-power MCU/module, likely an ESP32-C6/ESP32-S3-class module depending on BLE/Wi-Fi requirements and power targets.
  3. Select a digital temperature/RH sensor, preferably I²C, low-power, factory-calibrated.
  4. Design the USB-C 5 V input:
    • USB-C receptacle with CC pull-downs for default 5 V sink behavior.
    • Protection for reverse current, OVP, UVLO, OCP, and ESD.
    • Input current plan for 0.5–3 A USB-C sources.
  5. Add regulated rails, likely 3.3 V for MCU and sensor, with regulator sized from a full power budget.
  6. Add required decoupling, boot/config straps, programming/debug connector, reset, and any sensor pull-ups per datasheets.
  7. Verify all ICs against datasheet-recommended application circuits.
  8. Run ERC/review and fix all violations.
  9. After schematic approval, proceed to PCB layout with antenna keepout, USB-C edge placement, protection close to connector, and decoupling close to IC pins.
Once credits are available, I can build the schematic first and pause for your confirmation before moving to layout.
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