WiFi BLE Sensor Node Design
Worked for 1 min 27 sec
I started the design and renamed the project to Industrial WiFi BLE T-RH Node with a matching description and project properties. I also created a Design Notes project file capturing requirements, architecture, and preliminary power budget.
Added schematic parts so far:
- USB-C 2.0 receptacle
- TPS2595-series eFuse/input protection
- AP2112K-3.3 LDO
- ESP32-C3-MINI-1-N4 WiFi/BLE module
- SHT40 digital temperature/humidity sensor
- USBLC6-2SC6 USB data ESD protection
- BOOT and RESET tactile switches
I consulted datasheets for the ESP32-C3, SHT40, and AP2112. The passive support components were not added yet because the generic passive add attempt failed right before execution stopped; I found the correct generic resistor/capacitor library IDs afterward, but could not continue due to credits running out.
Remaining work:
- Add support passives: USB-C CC 5.1 kΩ pull-downs, eFuse setting parts, LDO input/output caps, 3.3 V bulk cap, ESP32 EN/BOOT passives, I2C pull-ups, and sensor decoupling.
- Wire all nets: USB VBUS, protected 5 V, 3.3 V, GND, USB D+/D-, EN, BOOT, I2C SDA/SCL.
- Mark unused ESP32/connector pins no-connect where appropriate.
- Re-run schematic review/ERC and fix violations.
- Create firmware starter and board bring-up plan files.
- After schematic passes review, ask for approval before moving to PCB layout.
Add support passives
Wire main nets
Run ERC check
Firmware starter plan
Document design choices
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