Temperature and Humidity Sensor Node Design
Thought for 3 sec
I’m blocked because execution credits are exhausted, so I can’t modify the project or run verification tools right now.
Current project state:
- No schematic components have been added.
- No nets or layout exist yet.
- The project is still an empty draft.
Recommended design direction when work can resume:
- MCU/radio: ESP32-C6 or ESP32-C3 class module for 2.4 GHz Wi-Fi 802.11 b/g/n + BLE 5.x, using a certified module for consumer RF compliance.
- Sensor: low-power digital temperature/RH sensor over I²C, e.g. Sensirion SHT4x/SHTC3-class.
- USB-C input: USB-C receptacle configured for 5 V default sink with CC pull-downs.
- Protection/power path:
- USB input ESD protection
- reverse-current / ideal-diode or load-switch protection
- OVP, UVLO, and OCP/current-limit stage sized for 0.5–3 A USB-C sources
- 5 V to 3.3 V regulator sized from a real power budget
- Required support:
- decoupling on every IC power pin
- I²C pull-ups
- RF antenna keepout if using a PCB/module antenna
- programming/debug header
- clean ERC review before layout
Next step once credits/tools are available: I’ll create the schematic first, select datasheet-backed parts, wire the USB-C protection and 3.3 V rail, add the Wi-Fi/BLE MCU module and T/RH sensor, then run review checks before asking for approval to move into PCB layout.
Choose main parts
Find protection parts
Power budget
Add debug features
Save requirements
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