Temperature and Humidity Sensor Design
Thought for 11 sec
I’m blocked because the project execution credits are exhausted, so I can’t add components, wire the schematic, consult datasheets, or run validation in Flux right now.
Current project state:
- Empty project
- 0 components
- 0 nets
- No schematic or layout work has been applied yet
Recommended design direction once credits are available:
- MCU/radio: ESP32-C6 or ESP32-S3 class module for 2.4 GHz Wi-Fi 802.11 b/g/n + BLE 5.x
- Sensor: digital temperature/humidity sensor over I²C, e.g. Sensirion SHT4x/SHTC3-class device
- Power input: USB-C receptacle configured for 5 V default sink using CC pull-down resistors
- Protection chain:
- USB-C VBUS ESD/TVS protection
- Reverse-current / ideal-diode or protected load switch
- Overvoltage protection
- Undervoltage lockout
- Overcurrent protection sized for 0.5–3 A USB-C sources
- Regulation:
- 5 V USB-C input to 3.3 V low-IQ regulator sized for Wi-Fi peak current
- Local decoupling at MCU, sensor, and protection/regulator ICs
- Consumer-use considerations:
- USB-C ESD protection
- RF antenna keepout
- Low-power sleep support
- Proper enclosure-accessible USB-C placement
- Clean power path and current limiting
What remains to be done:
- Rename and document the project requirements.
- Select exact ICs/modules from available library parts.
- Verify every IC against datasheets.
- Build the full schematic with USB-C, protection, 3.3 V rail, MCU, sensor, programming/debug, and passives.
- Run electrical review and fix violations.
- After schematic approval, proceed to PCB placement and routing.
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