4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers350 × 16 mm
LightBar
Kingdragoncat/LightBarA simple extendable lightbar for custom lighting on my 3d printer! + later things use if u want!
- Size
- 350 × 16 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 26
- Pads
- 140
- Tracks, vias
- 158, 43
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Aug 2026
- Updated
- 19 Aug 2026
Overview
LightBar is an open-source printed circuit board by Kingdragoncat, from the Kingdragoncat/LightBar repository on GitHub. It is a 2-layer board of 350 × 16 mm with 49 parts on 26 nets, routed with 158 tracks and 43 vias.
It is built around the WS2812B. Its parts include 22 capacitors, 21 diodes, 2 resistors and 2 connectors.
Main components
1README
README.mdLightBar
simple extendable light bar meant to be mounted to whatever project you want. just chain em together and go
what is this thing
its a PCB with 21 WS2812B addressable LEDs on it. theres connectors on both ends so you can daisy chain multiple bars together. each LED has its own 100nF bypass cap. theres also mounting holes on each end so you can screw it down to stuff
pcb layout
schematic
specs
- 21x WS2812B addressable RGB LEDs
- 5V power
- data in/out connectors on both ends for daisy chaining
- 100nF decoupling cap per LED
- 47uF bulk cap on the power rail
- 330 ohm resistors on data lines
- mounting holes on both ends
- designed in KiCad
wiring
hook up 5V, GND, and data to the input connector and youre good. if you want more bars just connect the output of one to the input of the next
BOM
| Ref | Qty | Value | Package | Description | Unit Price | Subtotal | Link |
|---|---|---|---|---|---|---|---|
| D1-D21 | 21 | WS2812B | 5050 PLCC4 | Addressable RGB LED | $0.11 | $2.31 | LCSC |
| C1-C21 | 21 | 100nF | 1206 | Ceramic decoupling cap | $0.03 | $0.63 | LCSC |
| C22 | 1 | 47uF | 1210 | Ceramic bulk cap | $0.25 | $0.25 | LCSC |
| R1, R2 | 2 | 330Ω | 1206 | SMD resistor | $0.01 | $0.02 | LCSC |
| J1, J2 | 2 | Conn_01x03 | JST XH 3-pin | Through-hole connector (S3B-XH-A) | $0.08 | $0.16 | LCSC |
total: 47 parts — ~$3.37
license
do whatever you want with it honestly
made by Jonah Novoseller (Kingdragoncat)
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 100nF | Capacitor_SMD:C_1206_3216Metric | C1, C2, C3, C4, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21 +5 |
| 21 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21 +5 |
| 2 | 330 | Resistor_SMD:R_1206_3216Metric | R1, R2 |
| 2 | Conn_01x03 | Connector_JST:JST_XH_S3B-XH-A_1x03_P2.50mm_Horizontal | J1, J2 |
| 2 | MountingHole_5.3mm_M5 | MountingHole:MountingHole_5.3mm_M5 | H1, H2 |
| 1 | 47uF | Capacitor_SMD:C_1210_3225Metric | C22 |
Questions
How big is the LightBar PCB?
It measures 350 × 16 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LightBar use?
49 parts, built around the WS2812B. 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 LightBar KiCad files?
From the Kingdragoncat/LightBar repository on GitHub, at the commit this page was made from: the board is Light Bar/Light Bar.kicad_pcb and its schematic Light Bar/Light Bar.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LightBar design in my own project?
Its repository states no licence, so its author keeps all rights: ask Kingdragoncat before reusing the design.
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