Temperature and Humidity Sensor Design
Thought for 3 sec
I’m blocked from modifying the project because execution credits are unavailable, so I could not add components, wire the schematic, or run review checks.
Current project state:
- Components: 0
- Nets: 0
- No schematic or PCB layout work has been performed yet.
Recommended design direction when work can continue:
- MCU/radio: ESP32-C6 or ESP32-S3 class module with 2.4 GHz Wi-Fi 802.11 b/g/n + BLE 5.x.
- Sensor: low-power digital temperature/humidity sensor over I²C, e.g. Sensirion SHT4x/SHTC3 class.
- Power input: USB-C receptacle configured for 5 V sink/default current with CC pull-down resistors.
- Protection/power path:
- USB-C VBUS fuse or current limiter sized for 0.5–3 A sources.
- Reverse-current protection / ideal diode or protected load switch.
- OVP/UVLO/OCP protection device on 5 V input.
- 5 V to 3.3 V regulator sized for Wi-Fi transmit current peaks.
- Proper input/output capacitors per regulator and protection IC datasheets.
- Consumer-use additions:
- ESD protection on USB-C lines and exposed interfaces.
- RF antenna keepout and layout constraints.
- Test points for 5 V, 3.3 V, GND, UART/programming, EN/BOOT.
- Bring-up checklist and firmware pin map.
What remains:
- Select exact MCU module, USB-C/protection ICs, regulator, and T/RH sensor.
- Consult datasheets for every IC before wiring.
- Build the schematic with USB-C power, protection, regulator, MCU, sensor, programming/debug, and decoupling.
- Run schematic review and fix violations.
- Create bring-up and firmware documentation.
- Ask for your approval before moving from schematic to PCB layout.
Find exact parts
Compare ESP32-S3
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USB-C protection IC
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