WiFi & Bluetooth Sensor Node


Created 3 project docs

Firmware Starter — SiWG917 USB-C WiFi/BLE T/RH Sensor

View Document

MCU module: U1 — SIWG917Y111MGABAR, Silicon Labs SiWG917 Wi-Fi 6 + BLE 5.4 module Recommended SDK: Silicon Labs WiSeConnect SDK / Simplicity...

Board Bring-Up Plan — USB-C WiFi BLE TH Sensor

View Document

Equipment: USB-C current meter or current-limited 5 V supply, DMM, oscilloscope, SWD debugger, 3.3 V USB-UART adapter. Firmware: use the Fir...

Technical Construction File — USB-C WiFi BLE TH Sensor

View Document

Draft — schematic-stage regulatory file. [ ] FCC Part 15 intentional radiator / unintentional radiator
Schematic wiring is complete and I created firmware, bring-up, and regulatory files. I’m running ERC/DRC-style checks now and will fix real electrical issues; any remaining schematic-geometry warnings will be called out separately.
Worked for 3 mins 20 sec
6/6 Run schematic/design checks and fix actionable issues

Rename project, create specification, and record initial requirements/power budget

Select library parts for MCU, T/RH sensor, USB-C input, regulator, and protection

Add main components and supporting passives to the schematic

Wire USB-C power/protection, 3.3 V rail, MCU boot/debug, USB data, I2C sensor, and indicators

Create firmware/regulatory/bring-up project files

Run schematic/design checks and fix actionable issues

Thought for 46 sec
Reading project docs.
Getting a BOM overview.
Completed 11 design checks — found 114 issues.
Thought for 42 sec — Verifying eFuse features
Read U2, TPS259530DSGT datasheets.
Thought for a moment
Searching for eFuse solutions
I need to address the issue with TPS2596 that requires fixing since the user needs the reverse. It looks like I have to replace or add an ideal diode. To do that, I should search for a part with back-to
Worked for 15 days 18 hrs
Thought for 47 sec — Searching for eFuse solutions
Found 4 results for TPS25942.
Found 3 results for TPS25944.
Found 3 results for Find eFuse with true reverse current blocking back-to-back FET for 5 V USB-C input, includes OVP UVLO OCP adjustable current limit around 1 A, available in Flux library, active SMD part. Candidate TI TPS25942 TPS25944 or similar..
Thought for a moment

Schematic of USB-C WiFi BLE TH Sensor
U2
D1
J1
U1
U3
GND
D2
U3 CTRL5 - R3 P2
R3
Resistance
909Ω
GND
GND
U1 GND_16 - C9 P2
GND
GND
GND
GND
GND
GND
U3 SW - L1 1
J1 VBUS__1 - U2 IN
U2 ILM - R3 P1
U2 OUT - C3 P1
J1 DP1 - J1 DP2
J1 CC1 - R1 P1
J2 2 - U1 JTAG_TMS_SWDIO
U4 SCL - U1 ULP_GPIO_1
J2 7 - U1 GPIO_8
U1 POC_OUT - R13 P1
J1 DP1 - J1 DP2
U2 ~{FLT} - R7 P1
U1 FLASH_IO_VDD - C14 P1
U1 ULP_GPIO_8 - R11 P1
J1 DN1 - J1 DN2
J2 8 - U1 GPIO_9
U2 ILM - R3 P1
U1 RESET_N - R12 P2
U3 PG1 - R8 P1
U2 OVLO/OVCSEL - R4 P1
U2 dVdt - C2 P1
J1 VBUS__1 - U2 IN
U1 POC_IN - R13 P2
J1 DP1 - J1 DP2
U3 OUT2 - C8 P1
J1 VBUS__1 - U2 IN
J1 VBUS__1 - U2 IN
J1 DP1 - J1 DP2
U1 JTAG_TDO_SWO - J2 6
J1 DN1 - J1 DN2
L1 2 - U3 OUT1
U2 OUT - C3 P1
J1 DN1 - J1 DN2
U2 EN/UVLO - R5 P2
U3 VIN2 - C4 P1
J1 CC2 - R2 P1
L1 2 - U3 OUT1
U3 VIN2 - C4 P1
L1 2 - U3 OUT1
U4 SDA - U1 ULP_GPIO_0
J2 4 - U1 JTAG_TCK_SWCLK
U3 SW - L1 1
U4 SCL - U1 ULP_GPIO_1
U4 SDA - U1 ULP_GPIO_0
J1 DN1 - J1 DN2
U2 ~{FLT} - R7 P1
L1
U4

USB-C WiFi BLE TH Sensor

USB-C WiFi BLE TH Sensor thumbnail