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2 layersIidx led ring, the printed circuit board in 3D

substitute for neons on an iidx cab

Copper layers
2
Thickness
1.6 mm
Parts
29
Nets
30
Pads
114
Tracks, vias
140, 27
Pours
2
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
28 May 2025
Updated
19 Aug 2025

Overview

Iidx led ring is an open-source printed circuit board by roxandtol, from the roxandtol/iidx-led-ring repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board with 29 parts on 30 nets, routed with 140 tracks and 27 vias.

It is built around the WS2812B.

Main components

1

README

README.md

Rough plans

[!WARNING]
This would be necessary only if you plan on running encrypted or want to make your cab look really cool. otherwise, use 🏳️‍⚧️DJ

So, the iidx lightning cab has enough lights to make a normal person blind, and as we all know, a legacy cab only has a fraction of them, and they're either neons or plain rgb, meanwhile the lightning cab uses mainly the ws2812b led chip for all the rgb stuff (except the turntables and the subwoofer leds, where they use plain rgb).

So to get some of the lightning leds to a legacy cab, we could switch out the neons on the header with some led boards or led strips from aliexpress, since they follow this pattern manual_top

In the manual, there's a white tape led section, which we could link the tape leds to the original spotlights the cab has, and 4 argb led sections which correspond to the gray areas on this picture lightning So we could use some trickery, and try to make some boards to fit in a legacy cab. The solution I was thinking of is this. where the red circles represent a neon, and the green lines represent the sides in a lightning cab. the red circles would have 27 leds each one (since there's 54 per side), and the sides would have 11 leds (to represent the title box leds). This would work for a 1st - 2nd gen cab. Tricoro cabs have a led strip at the top, which would need a simple led strip legacy_soluiton

Maybe there could be a led board that uses the original holes of a cab, and looks legit enough, and then a diffuser to not make it as bright (although being honest, I think most people will just turn on concentration mode on their cab lol)

Parts

29
QtyValueFootprintReferences
27WS2812BLED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mmD1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +11
2Conn_01x03_SocketConnector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_VerticalIN, OUT

Questions

What parts does the Iidx led ring use?

29 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 Iidx led ring KiCad files?

From the roxandtol/iidx-led-ring repository on GitHub, at the commit this page was made from: the board is neon-led-boards/iidx-led-ring.kicad_pcb and its schematic neon-led-boards/iidx-led-ring.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Iidx led ring design in my own project?

Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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