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2 layers17.8 × 19 mmRing mono, the printed circuit board in 3D

Lantern Corps Style Ring, SW/HW/Jewellery Design

Size
17.8 × 19 mm
Copper layers
2
Thickness
0.8 mm
Parts
8
Nets
2
Pads
14
Tracks, vias
12, 2
Pours
4
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
14 Nov 2021
Updated
7 Nov 2026

Overview

Ring mono is an open-source printed circuit board by whatnick, from the whatnick/lantern_ring repository on GitHub. It is a 2-layer board of 17.8 × 19 mm with 8 parts on 2 nets, routed with 12 tracks and 2 vias.

README

hardware/v2.0/ring_mono/README.md

Lantern Ring Mono PCB

Production boards use 0.8 mm FR-4, 1 oz copper, and lead-free HASL. Each assembled variant fits the same LED MPN at D1-D6; TP1 and TP2 are copper contacts and are not fitted components.

VariantLED MPNSolder maskSilkscreen
White / LifeIN-S126ASUWWhiteBlack
UV / DeathSM1206UV-400-ILBlackWhite
Red / RageAPTL3216SURCKRedWhite
Orange / AvariceAPTL3216SECK-01YellowBlack
Yellow / FearAPTL3216SYCKYellowBlack
Green / WillAPTD3216MGCGreenWhite
Blue / HopeAPT3216QBC/DBlueWhite
Indigo / CompassionAPTR3216-VFXPurpleWhite
Pink / LoveAPT3216PBC/RVPurpleWhite
Invisible / InfraredAP3216F3CBlackWhite

Orange, indigo, pink, and infrared use the closest available PCB colors. Confirm exact LED substitutions and fabrication colors before production.

Parts

8
QtyValueFootprintReferences
6LEDLED_SMD:LED_1206_3216MetricD1, D2, D3, D4, D5, D6
2TestPointTestPoint:TestPoint_Pad_1.5x1.5mmTP1, TP2

Questions

How big is the Ring mono PCB?

It measures 17.8 × 19 mm and has 2 copper layers, 0.8 mm thick.

What parts does the Ring mono use?

8 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 Ring mono KiCad files?

From the whatnick/lantern_ring repository on GitHub, at the commit this page was made from: the board is hardware/v2.0/ring_mono/ring_mono.kicad_pcb and its schematic hardware/v1.0/ring_pcb/ring_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Ring mono design in my own project?

Its repository states no licence, so its author keeps all rights: ask whatnick before reusing the design.

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