Missing Power Supply Parts
Thought for 11 sec
I’ll inspect the power-input and regulation paths, cross-check support components and connectivity, then report any missing parts or protections.
Worked for 40 sec
The current schematic does not contain a complete power-supply section—only the SK6812 LED and two bypass capacitors.
Missing or incomplete items:
- Power input/source: no USB-C connector or other 5 V input.
- 3.3 V regulator and its required input/output capacitors.
- USB input protection: ESD/TVS protection and optionally a fuse/current limiter.
- USB-C CC1/CC2 5.1 kΩ pull-down resistors, if USB-C is the intended source.
- Ground connection for LED1:
LED1:VSSis isolated and must connect to GND. - VDD terminal connection: the external VDD terminal is visually present but electrically disconnected from the VDD rail.
C74 (100 nF) and C75 (10 µF) are correctly placed across VDD and GND, but the disconnected VSS and VDD terminals prevent the LED power path from functioning. Also, despite the project description, this schematic currently contains no ESP32-S3 circuitry.
Thought for 3 sec
Use a 100 nF (0.1 µF) ceramic bypass capacitor per SK6812, connected directly between VDD and VSS/GND.
- Dielectric: X7R or X5R
- Voltage rating: ≥10 V for a 5 V rail
- Package: 0603 is suitable
- Placement: as close as possible to the LED’s power pins
Your existing C74 = 0.1 µF is correct. The 10 µF C75 can serve as local bulk capacitance for the LED rail, especially if multiple LEDs are chained. Also connect
LED1:VSS to GND—the current schematic leaves it isolated.Add LED power fixes
Check full power path
Review LED rail sizing
