USB-C Temperature and Humidity Sensor Node Design

zimin

zimin

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 can design this, but I’m currently blocked because this account has no available ACUs, so AI execution tools are unavailable and I can’t add components, wire the schematic, or create project files right now.
Current project state:
  • Empty project: 0 components, 0 nets.
  • No schematic or PCB work has been started in this session.
What remains to be done once ACUs are available:
  • Create a project spec for the USB-C powered Wi-Fi/BLE temperature/humidity sensor node.
  • Select an ultra-low-power Wi-Fi + BLE 5.x MCU/module, likely ESP32-C3/S3/C6 class depending on requirements.
  • Add USB-C 5 V input with CC resistors, reverse protection, OVP, UVLO, OCP/fuse/current limiting, and 0.5–3 A source planning.
  • Add 3.3 V regulation sized from a power budget.
  • Add a digital T/RH sensor, I2C pullups, decoupling, programming/debug access, status LED, and test points.
  • Run ERC/design review, then proceed to PCB placement and routing.
Create project spec
Recommend parts
Calculate power budget
Show block diagram
No schematic yet

Talk to Flux to get started.

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Doubtful Bronze R2-D2

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