Plan — Brianna's LED Nameplate

The original ask, captured retroactively from the design conversation
on 2026-04-30. Carried forward to the molecule wiki page so a future
AI picking this up sees the same brief that drove the build.

Original prompt

can you make a circuit board using adom-tsci that spells out Brianna
in led lights so Brianna can use it on her desk at work and plug it
into a usbc connector to give it power

Refinements during the build

• Color — Brianna prefers green LEDs. Pink was asked about and
  confirmed available (XL-1608PIC-04 on JLCPCB), but green was the
  call. Color list documented on the wiki page so a re-render in any
  other LED color is a single-constant change.
• Hosting — needed a persistent public URL Brianna could visit
  weeks from now without an Adom account. Wiki page is the answer;
  the molecule lives at
  wiki-ufypy5dpx93o.adom.cloud/molecules/brianna-led-nameplate.
• Workcell-fixturing — should be a proper Adom molecule, not
  a generic board. Four corner machine-contact pins (MC1–MC4)
  via the <Molecule type="4pin" size="100x38"> wrapper.
• Texture resolution — bake the board surface at 4096 px so the
  silkscreen reads cleanly at zoom (silkscreen is intentionally
  dense — see "Bottom silkscreen" below).
• Power LED — explicitly not added. The seven BRIANNA letters
  themselves are the power indicator: lit means 5 V is connected,
  dark means it isn't.
• Provenance line — Apple-style. Bottom silkscreen reads
  Designed by Adom in Fort Worth, Texas.
• No private references on the silkscreen — no GitHub URL, no
  per-author package name. Just the wiki URL and the brand mark.
• Bottom silkscreen as documentation — the user explicitly asked
  the board to "explain itself when flipped over." Bottom side carries
  HOW TO POWER IT (4-step instructions), HOW IT WORKS (the LED matrix
  explanation), BILL OF MATERIALS, HOW IT WAS BUILT, WORKCELL
  FIXTURING, IF A LED GOES DARK (repair notes), and footer credits.
• 30-second narrated demo video — early version recorded with
  the live adom-tsci viewer + caption overlay + Andrew Neural TTS.
  Lives as a video asset on the wiki page; superseded by the
  always-on interactive viewer once that wiki capability landed.

Hardware decisions

• ~70 green 0603 LEDs — one per lit pixel of a 3 × 5 bitmap font
  rendered for "BRIANNA". The font is a FONT const in
  lib/index.tsx; the renderer walks each letter's pixels and emits
  one <led> + one <resistor> per pixel.
• 300 Ω 0402 resistor per LED — sized to drive a green LED at ~10 mA
  from 5 V (Vf ≈ 2.1 V → ~2.9 V across resistor → R = 290 Ω → 300 Ω
  E12 series). All resistors live in the inter-row gap below their
  LED to keep the front face clean.
• USB-C TYPE-C-31-M-12 receptacle on the south edge, mouth
  cantilevered off the board so any standard USB-C cable plugs in
  cleanly. JLCPCB part C165948.
• 5.1 kΩ CC pulldowns ×2 — required so a USB-C cable identifies the
  board as a downstream device drawing power.
• 10 µF 0805 bulk decoupling cap on VBUS — smooths inrush as 70 LEDs
  light up together.

Out of scope (deliberate)

• No microcontroller, no firmware, no networking. The board is pure
  analog charm; it lights up when you plug it in.
• No PWM dimming, no animation, no individually-addressable LEDs.
• No assembly cost optimisation pass — current BOM is straightforward
  JLC-orderable parts; price isn't tuned for volume.

Build → publish workflow

cd adom-tsci-projects/Brianna-LED-Nameplate

# Build
bun install
bunx tsci build lib/index.tsx --glbs --svgs --3d-png --pcb-png

# Preview interactively
adom-tsci start . --port 8861 --tsci-port 3061 --texture-resolution 4096

# Publish updated viewer + source bundle to the wiki molecule page
adom-tsci export-wiki . \
  --slug brianna-led-nameplate \
  --page-type molecules \
  --label "Live 3D viewer"

Future work

• Vivid x-ray net glow — current build's autorouter splits VBUS
  and GND into 75 tiny per-LED nets, so the Nets-HUD x-ray glow on
  any single net is visually short. An explicit unified rail
  declaration in lib/index.tsx would make the glow span the whole
  board.
• Manufactured copy — JLCPCB fab quote pending. The bundle on the
  wiki includes Gerber-equivalent SVGs and the circuit.json; a real
  fab run needs Gerber export from tscircuit.
• Different name — the FONT bitmap is parameterised; swapping
  TEXT = "BRIANNA" for any other 7-or-fewer-letter name (or
  different length with proportional board resize) is a single-line
  change. Could be a forkable template.