

Closet LED
Personal embedded systems projects featuring hardware, firmware, PCB design, and prototyping.
- Size
- 33.5 × 45.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 11
- Pads
- 42
- Tracks, vias
- 99, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 8 Sep 2026
- Updated
- 28 Oct 2026
Overview
Closet LED is an open-source printed circuit board by CodenameUsama, from the CodenameUsama/Personal-Projects repository on GitHub. It is a 2-layer board of 33.5 × 45.5 mm with 16 parts on 11 nets, routed with 99 tracks and 0 vias.
It is built around the AO3400A. Its parts include 4 capacitors, 4 connectors, 2 resistors, 2 ICs and 1 transistor. It belongs with the STM32 boards of this library.
Main components
1Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 10kΩ | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 220Ω | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
| 1 | BULK_CAP[100µF] | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1 |
| 1 | DECOUP_CAP[100nF] | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | IN_CAP[1µF] | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | LED_OUT | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J2 |
| 1 | MCP1700x-330xxTT | Package_TO_SOT_SMD:SOT-23 | U2 |
| 1 | OUT_CAP[1µF] | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | POWER_IN | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1 |
| 1 | PUSH_BUTTON | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | REED_OUT | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J4 |
| 1 | ST-LINK | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J3 |
| 1 | STM32C011J4Mx | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
The 14 most common of 16 parts.
Questions
How big is the Closet LED PCB?
It measures 33.5 × 45.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Closet LED use?
16 parts, built around the AO3400A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Closet LED KiCad files?
From the CodenameUsama/Personal-Projects repository on GitHub, at the commit this page was made from: the board is Door_LED/KiCAD/Closet_LED.kicad_pcb and its schematic Door_LED/KiCAD/Closet_LED.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Closet LED design in my own project?
Its repository states no licence, so its author keeps all rights: ask CodenameUsama before reusing the design.
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