Relay Controller Design
Worked for 4 mins 51 sec
Implemented the schematic for the USB-C powered Wi‑Fi/BLE temperature/humidity node. It uses a SiWG917 Wi‑Fi/BLE 5.4 module, SHT41 T/RH sensor, USB-C sink input, TPS25940 true reverse-blocking eFuse with OVP/UVLO/OCP/soft-start, MP28301 3.3 V buck regulator, ESD protection, reset/ISP/SWD debug, I2C pull-ups, and status LED.
Created project files:
Open items:
- PCB layout/routing is not done yet, so airwire DRC errors are expected.
- Generic passives still need final manufacturer MPNs before manufacturing export.
- Layout must enforce the SiWG917 antenna keepout and thermal isolation around the SHT41.
Suggested next steps:
- Set board size/stackup and move into PCB placement.
- Place U1 at the board edge with antenna keepout and U4 away from heat sources.
- Route power, buck, I2C, SWD/UART, and USB-C protection paths.
- Assign final passive MPNs and run full DRC/manufacturing checks.
Thought for 6 sec
Understood: a 4-channel relay controller with Bluetooth app control, four momentary-button inputs, four relay outputs, and four LED state outputs.
No design changes were made this turn; the current USB-C Wi‑Fi/BLE temperature/humidity sensor project remains unchanged. The relay design still needs key electrical requirements defined—relay load voltage/current and AC vs. DC, supply voltage, isolation expectations, and whether LEDs are onboard or externally connected—before selecting a safe topology.
Execution stopped because your ACUs ran out.
