WiFi & Bluetooth Sensor Node
Worked for 2 sec
I’ll build the schematic for a USB-C powered Wi‑Fi/BLE temperature/humidity sensor node: set requirements, choose parts, add/wire power protection, MCU, sensor, and then run checks.
Worked for 1 min 47 sec
Created a project doc
Project Specification — USB-C WiFi BLE TH Sensor
Status: Draft schematic in progress. A consumer USB-C powered temperature and relative humidity sensor node with Wi-Fi and Bluetooth Low Ene...
Architecture review agrees with a USB-C sink plus real VBUS protection and a buck regulator; I’m selecting a low-power certified Wi‑Fi/BLE module rather than a hot LDO-based ESP32-style power tree.
Worked for 2 mins 21 sec
Components are in: Silicon Labs SiWG917 Wi‑Fi/BLE module, SHT41 T/RH sensor
Thought for 36 sec
Thought for 23 sec — Assessing wire connections
Reading schematic details for J1, U1, U2 and 8 more.
Thought for a moment
Considering debug options
I'm thinking about the UART ISP on GPIO_8/9 not being connected for debugging. Maybe we could add test points, but right now we don’t have any. I'm considering using J2 pins 7/8 instead, but I wonder if SWD would be enough as it typically suffices for debugging. Skill suggests including UART updates, and datasheet backs that up. I’ll probably go with J2 pin 7 for UART_TX and pin 8 for UART_RX instead of using TDI, since SWD might cover it.
Evaluating GPIO Connections
I’m considering wiring for the U1 pins and determining which should be set to "no connect." The pins I've used include JTAG_TMS, JTAG_TCK, GPIO_8, and others. I need to list all unused GPIO that should not connect, possibly including the RF pins for the built-in antenna. I’m also thinking about the USB connector pins and whether certain capacitors might be necessary. Should I mark OUT2 as NC and remove C8 if LDO is disabled? I'll need to check the datasheet as well.
Considering pin configuration
I want to avoid
