Here’s a summary of what was accomplished:
Work completed
- Project description updated to “Minimal ESP32-S3 USB-C Powered Blink-LED Development Board with Onboard 3.3 V LDO.”
- System Architecture property added with the mermaid block-flow diagram.
- Project properties set:
- Power Input Option = “USB-C only”
- ESP32 Module = “ESP32-S3-WROOM-1”
- LED Configuration = “Green LED on GPIO2”
- Major ICs placed:
- J1 USB-C connector (U262-161N-4BVC11)
- U1 TPS76933DBVT 3.3 V LDO
- U2 ESP32-S3-WROOM-1 module
- Passive and reset components added:
- All nets routed:
- USB-C 5 V ➔ LDO input & input caps
- LDO output ➔ 3.3 V rail & output caps
- GND tied across all components
- EN/BOOT pull-ups and buttons wired
- USB_DP/USB_DM to ESP32 programming pins
- GPIO2 ➔ R3 ➔ D6 ➔ GND
- ERC issues addressed (added decoupling caps and pull-ups) and BOM enriched with part numbers.
Unresolved tasks
None — all plan items are complete.
Success criteria review
- ✅ USB-C 5 V input regulated to 3.3 V with proper decoupling
- ✅ EN/BOOT strapping and reset pushbuttons functional for programming
- ✅ Status LED circuit on GPIO2 with series resistor
- ✅ ERC and BOM checks completed
Next recommended step
Prepare for PCB layout: review footprints, configure the stackup, and select a board mounting solution so we can place and auto-route components.