Low-Power T/RH Sensor Node Design

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I’ll create your low‑power USB‑C (5 V) Wi‑Fi + BLE T/RH sensor node. Here’s the plan:
  1. Architecture & parts
  • Ultra‑low‑power dual‑radio MCU/module, digital I2C T/RH sensor, USB‑C sink (default 5 V, CC Rd), 5 V→3.3 V regulator, input protection (reverse/OVP/UVLO/OCP), ESD, antenna strategy, debug header, indicators.
  1. Power & protections
  • Implement USB‑C sink with CC Rd, ESD on connector, reverse/OVP/UVLO/OCP chain, bulk + per‑rail decoupling (100 nF at each MCU VDD‑GND within 5 mm), 5 V→3.3 V regulation, size VBUS copper for up to 3 A.
  1. Digital interfaces
  • I2C to sensor with pull‑ups, boot/reset and programming pins, optional user button/LEDs, clear net naming.
  1. PCB layout
  • RF keepout and edge placement for 2.4 GHz antenna, solid ground strategy, short decoupling paths, apply trace/via rules for power and signals, place and auto‑route.
  1. Review & outputs
  • Run ERC/DRC and availability checks, finalize markings, export Gerbers/BOM/PNP.
Click Start on the plan bar to proceed. If you prefer changes, tell me:
  • MCU/module preference or family? Module vs. bare SoC?
  • Sensor accuracy targets (e.g., ±1.5% RH, ±0.2 C)?
  • Physical constraints: board size and antenna type (chip/on‑board vs. external connector)?
Choose MCU module
Pick T/RH sensor
USB-C sink details
Protection parts search
Define constraints
39 days
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