Low-Power T/RH Sensor Node Design
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.
Thought for 3 mins 4 sec
I’ll build your low‑power USB‑C (5 V) Wi‑Fi + Bluetooth T/RH sensor node with input protection sized for 0.5–3 A sources.
- Add: ESP32‑C3 Module, SHTC3 T/RH, USB‑C Receptacle, CC pull‑downs 5.1k Resistor, USB ESD/TVS (ESD Protector, TVS Diode 5V).
- Power path: eFuse 5V with reverse/OVP/UVLO/OCP, then Buck Regulator 3.3V + Inductor 2.2uH, bulk 100uF Capacitor, and local decoupling 10uF Capacitor/100nF Capacitor.
- I2C and support: pull‑ups 4.7k Resistor per I2C best‑practice, reset/boot, status LED+1k Resistor, programming header Pin Header 1x6.
- Connect nets: USB‑C VBUS → eFuse → buck → 3V3 rail; I2C between MCU and sensor; place decouplers at pins; GND stitching. Place module with antenna keepout; locate sensor away from heat/air‑blocked zones.
Click Start on the plan to proceed, or tell me any preference (MCU module, sensor, form factor).
Select MCU module
Select T/RH sensor
Define board dimensions
Choose CC resistors
To get started, talk to Flux or create a New Document.
