Temperature and Humidity Sensor Node Design
Thought
Work done
- No tasks were completed; execution halted due to insufficient credits.
Pending tasks
- Core Component Integration
- Select and place a dual-radio MCU (Wi-Fi + BLE 5.x)
- Add a digital temperature and humidity sensor with I²C pull-ups
- Add a USB-C receptacle and configure CC pull-downs for sink
- Power Subsystem and Protection
- Route VBUS through an eFuse or protection IC (0.5 A–3 A)
- Add a 5 V→3.3 V low-Iq regulator
- Place 100 nF decoupling and low-ESR bulk capacitors
- Signal Integrity and ESD Protection
- Add bidirectional TVS diodes on USB D+ and D– (<1 pF)
- Define solid ground scheme and add bulk decoupling
- Connectivity and Layout Preparation
- Connect I²C, boot, reset, programming pins; add status LED/test points
- Plan RF keep-out zones, antenna clearance, via stitching, sensor vent
- Final Review and Validation
- Run ERC/DRC, verify power/thermal, update BOM, export schematic/PCB
Success criteria status
- ✗ Schematic is empty; no components placed
- ✗ No power, ESD, or signal-integrity measures implemented
- ✗ No PCB layout exists for RF or grounding practices
Recommended next step
Begin with Core Component Integration: select and place the dual-radio MCU supporting 802.11 b/g/n and BLE 5.x so we can build out the rest of the schematic.
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