Larry LED Nameplate

{
  "schema_version": 1,
  "type": "component",
  "slug": "larry-led-nameplate",
  "title": "Larry LED Nameplate",
  "brief": "72x24mm USB-C desk nameplate with 44 white LEDs spelling LARRY in a 3x5 pixel font. Plug in any iPhone charger and it lights up.",
  "version": "1.0.0",
  "tags": [],
  "license": "MIT",
  "sample_prompts": [
    {
      "prompt": "Show me the Larry LED Nameplate"
    },
    {
      "prompt": "Open the 3D viewer for Larry's nameplate"
    },
    {
      "prompt": "What components are on the Larry LED Nameplate?"
    }
  ],
  "component": {
    "mpn": "Larry LED Nameplate",
    "manufacturer": "",
    "package": "",
    "pin_count": null,
    "category": "molecule",
    "subcategory": "",
    "body_size": null,
    "parts": {},
    "distributor_links": {}
  },
  "readme": "## Overview\n\nA 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.\n\n## How it works\n\n- **44 white LEDs** (0603) arranged in 5 letters: L-A-R-R-Y\n- Each LED has its own **220 ohm current-limiting resistor** (0402)\n- All LED+resistor pairs wired in **parallel** from VBUS to GND\n- **USB-C connector** on the east edge with 5.1k ohm CC pull-downs\n- **100nF bypass cap** on VBUS for decoupling\n- Total draw: ~400mA at 5V (2W) — any phone charger handles it\n\n## How to use it\n\n1. Grab any USB-C cable (iPhone charger works)\n2. Plug one end into the board's east edge\n3. Plug the other end into a 5V USB-C power source\n4. LARRY lights up white\n\n## Bill of Materials\n\n| Component | Value | Package | Qty |\n|-----------|-------|---------|-----|\n| LED | white | 0603 | 44 |\n| R | 220 ohm | 0402 | 44 |\n| R_CC1, R_CC2 | 5.1k ohm | 0402 | 2 |\n| C_BYP | 100nF | 0402 | 1 |\n| J1 | TYPE-C-31-M-12 | USB-C | 1 |\n\n## Pixel font\n\nEach letter is a 3-wide x 5-tall grid at 3mm pitch:\n\n```\nL:        A:        R:        R:        Y:\nX . .     . X .     X X .     X X .     X . X\nX . .     X . X     X . X     X . X     X . X\nX . .     X X X     X X .     X X .     . X .\nX . .     X . X     X . X     X . X     . X .\nX X X     X . X     X . X     X . X     . X .\n```\n\nLED counts: L=7, A=10, R=10, R=10, Y=7 = 44 total.\n\n## Design details\n\n- Board: 72 x 24 mm, 2-layer, 1.6mm FR4, round edges\n- Molecule type: 4-pin with MachinePinMediumStandard\n- 4 corner machine contacts: MC_VCC1/MC_VCC2 (north), MC_GND1/MC_GND2 (south)\n- Scaffold contacts feed the same VBUS/GND rails as USB-C — board can be powered either way\n- Pixel pitch: 3mm LED-to-LED, 4mm gap between letters\n- White LED Vf ~3.0V, so 220 ohm at 5V gives ~9mA per LED\n- USB-C on east edge using UsbCReceptacle wrapper (TYPE-C-31-M-12, JLCPCB C165948)\n\n## Built with\n\nAuthored in tscircuit (TSX), previewed with adom-tsci, published to the Adom Wiki.\n",
  "author": {
    "id": "695820315b5f1e4db2fcf602",
    "name": "Kyle Bergstedt",
    "email": "[email protected]"
  },
  "visibility": {
    "public": true
  },
  "hero": null,
  "discovery_triggers": [],
  "discovery_pitch": null,
  "metadata": {},
  "created_at": "2026-05-28T05:30:56.128Z",
  "updated_at": "2026-05-28T05:30:56.128Z"
}