Larry LED Nameplate

Creator John Lauer

Tools tscircuit adom-tsci

Version 1.0.0

Assets 1 files

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What components are on the Larry LED Nameplate?

⚡ Install this molecule

Paste this into Claude Code (VS Code panel, Adom editor, or terminal) to install:

Search the Adom Wiki for the molecule "Larry LED Nameplate" (slug: larry-led-nameplate) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/molecules/larry-led-nameplate. Download its symbol (.kicad_sym), footprint (.kicad_mod), and 3D model (.glb/.step) assets into my current KiCad project under symbols/, footprints/, and 3dmodels/ directories. Register them in the project library tables. Show me the files once installed.

Overview

A white LED desk nameplate that spells LARRY in a 3x5 bitmap pixel font. Designed as an Adom molecule (72 x 24 mm, 4-pin machine contact) so it can be manufactured on the InstaPCB workcell.

How it works

44 white LEDs (0603) arranged in 5 letters: L-A-R-R-Y
Each LED has its own 220 ohm current-limiting resistor (0402)
All LED+resistor pairs wired in parallel from VBUS to GND
USB-C connector on the east edge with 5.1k ohm CC pull-downs
100nF bypass cap on VBUS for decoupling
Total draw: ~400mA at 5V (2W) — any phone charger handles it

How to use it

Grab any USB-C cable (iPhone charger works)
Plug one end into the board's east edge
Plug the other end into a 5V USB-C power source
LARRY lights up white

Bill of Materials

Component	Value	Package	Qty
LED	white	0603	44
R	220 ohm	0402	44
R_CC1, R_CC2	5.1k ohm	0402	2
C_BYP	100nF	0402	1
J1	TYPE-C-31-M-12	USB-C	1

Pixel font

Each letter is a 3-wide x 5-tall grid at 3mm pitch:

L:        A:        R:        R:        Y:
X . .     . X .     X X .     X X .     X . X
X . .     X . X     X . X     X . X     X . X
X . .     X X X     X X .     X X .     . X .
X . .     X . X     X . X     X . X     . X .
X X X     X . X     X . X     X . X     . X .

LED counts: L=7, A=10, R=10, R=10, Y=7 = 44 total.

Design details

Board: 72 x 24 mm, 2-layer, 1.6mm FR4, round edges
Molecule type: 4-pin with MachinePinMediumStandard
4 corner machine contacts: MC_VCC1/MC_VCC2 (north), MC_GND1/MC_GND2 (south)
Scaffold contacts feed the same VBUS/GND rails as USB-C — board can be powered either way
Pixel pitch: 3mm LED-to-LED, 4mm gap between letters
White LED Vf ~3.0V, so 220 ohm at 5V gives ~9mA per LED
USB-C on east edge using UsbCReceptacle wrapper (TYPE-C-31-M-12, JLCPCB C165948)

Built with

Authored in tscircuit (TSX), previewed with adom-tsci, published to the Adom Wiki.

Source files

KICA	Larry-Nameplate-3d.kicad_pcb KiCad PCB with 3D models (ready for gerber export)	file	465.4 KB
PNG	3d.png Top-down 3D render	screenshot	56.9 KB
PNG	pcb.png PCB layout — copper, silkscreen, drill	screenshot	59.3 KB
SVG	pcb.svg PCB layout (vector SVG)	file	435.2 KB
SVG	schematic.svg Circuit schematic	file	467.2 KB
GZ	larry-led-nameplate-source.tar.gz Source for Larry-Nameplate — full tscircuit project (lib/, package.json, walkthrough.json, plan.md if present). Untar and `bun install && bunx tsci build` to recreate.	file	7.5 KB
MD	plan.md Original design brief / plan for Larry-Nameplate — the prompt the project was authored from.	file	1.8 KB
GLB	3d.glb Full 3D model — opens in any glTF viewer	glb	2.3 MB

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0 revisions · Molecule # · Updated 2026-05-15 02:47:38