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2 layers330 × 15 mmLED Light Bar, the printed circuit board in 3D

An unofficial Prusa MK3 and MK4 to Switchwire total conversion mod, from Positron's April Fools of 2025.

Size
330 × 15 mm
Copper layers
2
Thickness
1.6 mm
Parts
30
Nets
23
Pads
70
Tracks, vias
61, 18
Pours
3
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
25 Apr 2025
Updated
28 Sep 2026

Overview

LED Light Bar is an open-source printed circuit board by Positron3D, from the Positron3D/Prusawire repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 330 × 15 mm with 30 parts on 23 nets, routed with 61 tracks and 18 vias.

Its parts include 18 diodes, 6 resistors, 2 connectors and 2 switches.

README

PCBs/LED Light Bar/README.md

Prusawire Daylight Stick by Ella Fox

1 2

Parts

30
QtyValueFootprintReferences
18LEDLED_SMD:LED_PLCC_2835_HandsolderingD1, D2, D3, D4, D5, D6, D7, D10, D11, D12, D13, D14, D15, D16, D17, D18 +2
6100R 0.5WResistor_SMD:R_1210_3225Metric_Pad1.30x2.65mm_HandSolderR1, R2, R3, R4, R5, R6
2M3 DIN965MountingHole:MountingHole_3.2mm_M3_Pad_ViaH1, H2
2PowerConnector_JST:JST_XH_S2B-XH-A_1x02_P2.50mm_HorizontalJ1, J2
2~LED_Bar:Positron_LogoS1, S2

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Questions

How big is the LED Light Bar PCB?

It measures 330 × 15 mm and has 2 copper layers, 1.6 mm thick.

What parts does the LED Light Bar use?

30 parts. 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 LED Light Bar KiCad files?

From the Positron3D/Prusawire repository on GitHub, at the commit this page was made from: the board is PCBs/LED Light Bar/LED Light Bar.kicad_pcb and its schematic PCBs/LED Light Bar/LED Light Bar.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the LED Light Bar design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).