2 layers30.5 × 24.1 mm
2 layers128 × 100 mm
Sunface
greenstitch315/sunface1A big light for your face so you can wake up
- Size
- 128 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 54
- Pads
- 142
- Tracks, vias
- 133, 35
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 10 Jan 2026
- Updated
- 29 Oct 2026
Overview
Sunface is an open-source printed circuit board by greenstitch315, from the greenstitch315/sunface repository on GitHub, published under the MIT licence. It is a 2-layer board of 128 × 100 mm with 69 parts on 54 nets, routed with 133 tracks and 35 vias.
It is built around the PT4115 and XL-2835UWC-02. Its parts include 49 diodes, 16 resistors, 1 capacitor, 1 IC and 1 inductor.
Main components
2
PT4115
SOT-89-5-25℃~+85℃ 1.2A 1MHz 5% 6V~30V Analog、PWM Buck Built-in DC-DC Over-Temperature Protection (OTP) SOT-89-5 LED Drivers ROHSUMWLED Drivers
XL-2835UWC-02
SMD2835-2P-20℃~+85℃ 120° 200mW 3.4V 6000K~7500K 60mA Discrete Diode Top-mount White Yellow Lens SMD2835-2P LED Indication - Discrete ROHSXINGLIGHTLED Indication - Discrete
README
README.mdsunface
A big light for your face so you can wake up.
This project aims to provide a bright light to help stimulate wakefullness in the absence of natural light. Our bodies naturally wake when sunlight enters our eyes, even through closed eyelids. Through a WiFi connection, this light may be configured through Apple's HomeKit to smoothly turn on over the course of 30 minutes to reach full brightness at a specific time of desired waking.
White LEDs of a cool 6500k spectrum align with natural sunlight and is also similar in colour spectrum to LEDs used in lamps to treat seasonal affective disorder (SAD). Further to this, the lights brightness is flicker-free due to it the LEDs being powered by constant current driver ICs which is supposed to yield a marked improvement over pulse width modulation for eye-comfort.
A generic wall mount option is available, but the system may also be configured to be attached to a headboard by swapping out the 3D printed mounts at the ends of the light, although this will require some custom design work due to the differences in bed frames.
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | XL-2835UWC-02 | easyeda2kicad:LED-SMD_L3.5-W2.8-RD_1.25T-2PWT | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +32 |
| 16 | 1R | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 1 | 0R1 | Resistor_SMD:R_0603_1608Metric | Rs1 |
| 1 | 100uF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 33uH | easyeda2kicad:IND-SMD_L7.1-W6.6 | L1 |
| 1 | D_Schottky | easyeda2kicad:SMA_L4.3-W2.6-LS5.0-RD | D1 |
| 1 | PT4115 | easyeda2kicad:SOT-89-5_L4.5-W2.5-P1.50-LS4.5-BR | U1 |
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Questions
How big is the Sunface PCB?
It measures 128 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sunface use?
69 parts, built around the PT4115 and XL-2835UWC-02. 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 Sunface KiCad files?
From the greenstitch315/sunface repository on GitHub, at the commit this page was made from: the board is hardware/all_in_one/sunface.kicad_pcb and its schematic hardware/all_in_one/led_string.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sunface design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).