Temperature and Humidity Sensor Node Design

pepimarinov

pepimarinov

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’ll create your low-power USB-C environmental node with a dual-radio Wi‑Fi/BLE MCU, digital T/RH sensor, and a protected 5 V power path.
Planned steps:
  1. Add MCU, sensor, USB‑C (power‑only), eFuse/ideal‑diode, low‑Iq 3.3 V buck, ESD, decoupling, I2C pullups, minimal debug.
  2. Wire CC (5 V sink), route VBUS through protection to buck, make 3.3 V rail, I2C, boot/reset, grounding.
  3. Configure 4‑layer stack, antenna keep‑out at edge, size VBUS traces for up to 3 A.
  4. Place/auto‑layout, run ERC/DRC and availability, refine RF/power.
  5. Finalize BOM, schematics, and manufacturing files.
A couple quick choices to proceed:
  • MCU family preference (e.g., Espressif vs. others)?
  • Antenna type: PCB trace, chip antenna, or external connector?
  • Any target accuracy/class for the T/RH sensor (e.g., ±1.5% RH / ±0.2 C)? Click Start to run the plan.
Choose ESP32 module
Specify sensor performance
Pick antenna style
Clarify USB-C data lines
Add user interface details
Sign up to send
No schematic yet

Talk to Flux to get started.

No layout yet

When components get added to the schematic, they'll show up here.