Temperature and Humidity Sensor Node Design

females

females

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.
70 days

flux

1:06

Project

Determining plan vs consult.

Sticking to plan level.

Proposing design steps.

Selecting components for the design.

Planning power management and connections.

Routing the board and planning steps.

I’ll create a low‑power USB‑C temperature/humidity node with dual‑radio Wi‑Fi (802.11 b/g/n) + BLE 5.x and full input protection.
Planned steps:
  1. Select and add MCU/module, digital T/RH sensor, USB‑C, 5 V→3.3 V buck.
  2. Add reverse/OVP/UVLO/OCP (eFuse/ideal diode), CC sink resistors, core nets.
  3. Add passives: decoupling/bulk, pull‑ups, ILIM/sense, ESD/EMI parts.
  4. PCB: RF edge keep‑out, thermally isolate sensor; auto‑place/route.
  5. ERC/DRC review, parts availability, export fab files.
Before I start:
  • Do you prefer a radio module (integrated antenna) or chip + antenna?
  • Is USB data needed for firmware/programming, or power‑only USB‑C?
  • Any sensor accuracy/brand preference (e.g., Sensirion SHT4x), or OK with typical ±1.5% RH?
Click “Start” on the plan bar when ready.
Answer questions + constraints
Clarify MCU features
Specify sensor placement needs
Add USB-C data decision
Tighten protection specs
70 days
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