Wi-Fi and Bluetooth Sensor Node Design
0:16
Thought for a moment
I’m blocked from executing the design work because the session has run out of credits.
Current project state:
- No schematic components have been added yet.
- No nets or PCB layout exist yet.
- The project is still an empty draft.
What remains to be done:
- Define the architecture for a USB-C powered Wi-Fi + BLE environmental sensor node.
- Select an ultra-low-power dual-radio MCU/module, likely an ESP32-C6 / ESP32-C3-class device depending on requirements.
- Select a digital temperature/humidity sensor, preferably I²C with low standby current.
- Design the USB-C 5 V input stage with:
- USB-C receptacle
- CC pull-down resistors for 5 V default sink mode
- Reverse-current / reverse-polarity protection
- OVP, UVLO, and OCP protection
- Input current planning for 0.5–3 A USB-C sources
- Add regulated rails, likely 3.3 V for MCU and sensor.
- Add all required decoupling, pull-ups, boot/configuration resistors, antenna keepout, and programming/debug access.
- Run schematic review/ERC and fix all issues.
- After schematic approval, proceed to PCB placement, RF-aware layout, and routing.
Recommended next step when credits are available: start with a full schematic design using a certified Wi-Fi/BLE module to simplify RF compliance and consumer-use reliability.
Find MCU modules
Choose T/RH sensor
USB-C protection
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