W00c0n Badge Production

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w00c0n 30 badge — RED top board production export
Production-intent two-board clamshell badge for w00c0n 30th anniversary: red top art board with inward-facing addressable LEDs and black bottom electronics/art board for JLCPCB turnkey assembly.
w00c0n 30 badge — BLACK bottom board production export
Production-intent two-board clamshell badge for w00c0n 30th anniversary: red top art board with inward-facing addressable LEDs and black bottom electronics/art board for JLCPCB turnkey assembly.
RED board production completion/export
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BLACK board production completion/export
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flux

I’m blocked now because the account has no available ACUs, so I can’t continue executing tools or wait on the spawned board-completion threads.
Accomplished so far:
  • Updated production docs to make the coin-cell/WS2812 voltage, runtime, firmware-cap, P-MOS fault-scope, and one-cell-reversed risks explicit blockers: Production Release Risk Review.
  • Re-sourced/updated BOM metadata for the JLCPCB/LCSC parts and documented the audit: JLCPCB BOM Sourcing Audit.
  • Updated the firmware, bring-up, stackup/alignment, project specification, and blocker notes with low-battery, validation, and per-board export side/orientation gates.
  • Cloned the master into separate RED and BLACK production-export projects and started board-specific completion/export threads, but those did not finish before ACUs became unavailable.
Open items:
  • Finish the RED and BLACK board-specific layout/export threads.
  • Apply/import artwork and shared outline, or document exact tooling blockers.
  • Place aligned standoff holes and correct component sides.
  • Route both boards, run/fix ERC/DRC, and export separate JLCPCB Gerber/drill/BOM/CPL packs.
  • Validate the CR2032/WS2812 voltage/runtime and parallel-cell fault behavior before any production-ready claim.
Manual export steps
Validation checklist
JLCPCB file list
Production warning notes

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Project Specification — w00c0n 30th Anniversary Two-Board Badge
Project Overview
Production-intent two-board clamshell PCB badge for JLCPCB turnkey assembly. Status: Draft / in implementation.
Intended Use
Conference badge with faithful visible artwork and battery-powered inward-facing RGB glow.
What the Device Should Do
  • Preserve the supplied red top-board neuron artwork and black bottom-board street-art/utility faces.
  • Drive an addressable RGB LED chain placed behind neuron nucleus and dendrite-tip cutouts.
  • Run from two coin cells with a slide power switch, reverse-polarity protection, test points, and programming access.
Main Features
  • Two aligned PCBs with same outline, aligned standoff holes, and 2-4 mm clamshell gap.
  • Top board: red solder mask, ENIG, front copper/silk art, bottom-side LEDs only.
  • Bottom board: black solder mask, ENIG, top visible art, back utility electronics.
  • MCU: ATtiny1614 UPDI-controlled LED animation controller.
  • LEDs: target 18 WS2812B-2020 addressable RGB LEDs, brightness capped in firmware.
System Architecture
Diagram



  
    
  
  
    
  



















2x CR2032 coin cells in parallel
Slide switch
P-MOS reverse-polarity protection
VLED/VMCU rail
ATtiny1614
Top-board WS2812B-2020 chain
LED_DATA
UPDI header
4-pin board-to-board interconnect
Hardware Subsystems
  • Power: two CR2032 holders paralleled after matched-cell installation guidance, slide switch, P-channel MOSFET reverse-polarity protection, local bulk/decoupling.
  • Compute: ATtiny1614-SSFR, UPDI programming header, reset/UPDI pull-up support.
  • Light engine: 18 WS2812B-2020 LEDs on the top board underside, daisy-chained DIN/DOUT.
  • Interconnect: 4 conductors between boards: VLED, GND, LED_DATA, spare/ID.
  • Mechanical: shared outline from front_outline.svg, four aligned standoff holes, red-board front copper/silk art and black-board top copper/silk art imported from direct artwork URLs.
Interfaces and Connections

Table

InterfaceSignalsNotes
UPDI headerVLED, GND, UPDINo USB on badge. External programmer required.
Board-to-boardVLED, GND, LED_DATA, SPARESame pinout on both PCBs, keyed/alignment-labeled.
Test pointsVLED, GNDBottom back face.
Power and Runtime Expectations
Preliminary cap: 18 LEDs at firmware-limited ~1 mA/channel average maximum (~3 mA/LED white-equivalent cap), plus MCU ~3-8 mA active. Expected active current target: ~35-65 mA depending animation. Production runtime and voltage-margin claims are blocked until measured prototypes validate VLED sag, LED behavior, and MCU reset margin. Two fresh CR2032 cells in parallel have high nominal low-drain capacity, but effective usable capacity at badge-level pulse current may be far lower; full-white/high-brightness is firmware-blocked for usability, but firmware is not a hardware safety mechanism.
Power Tree and Power Budget

Table

LoadTypical animationBrightness-capped worst case
ATtiny16143 mA8 mA
18x WS2812B-202018-45 mA54 mA
Pullups/leakage<0.2 mA<0.5 mA
Total~21-48 mA~63 mA
Manufacturing and Assembly Expectations
  • JLCPCB turnkey PCBA target.
  • ENIG finish on both boards.
  • Red solder mask top board; black solder mask bottom board; white silkscreen.
  • Use LCSC/JLCPCB-available parts where present; some components may be Extended parts.
  • Export per board: Gerber/drill, BOM, CPL, and notes.
Firmware-Relevant Hardware Requirements
  • ATtiny1614 Arduino/megaTinyCore or bare-metal AVR firmware.
  • LED data on a timer-capable GPIO.
  • UPDI programming via 3-pin/6-pin header.
  • Firmware must enforce global brightness/current cap.
Physical Design Expectations
  • Approximate width: 88 mm from brief/art.
  • Shared outline and mounting holes for both boards.
  • Electronics restricted to bottom-board back face except top-board underside LEDs.
  • Visible art faces remain free of components.
Important Design Decisions
  • Use ATtiny1614 for small, low-power, JLCPCB-available UPDI MCU.
  • Use WS2812B-2020 LEDs for compact one-wire addressable RGB glow.
  • Use parallel CR2032 cells for 3 V direct rail and lower source resistance than a single cell.
  • Do not add USB to preserve brief and reduce current/space.
Assumptions and Risks
  • Direct artwork URLs are available for red front, black top street-art, and back utility/branding reference. The black copper SVG is assigned to bottom-board top copper; black silk SVG is assigned to bottom-board top silkscreen; back_reference.png is the bottom-back placement/branding reference.
  • WS2812B-family LEDs are marginal at depleted coin-cell voltage; production firmware must cap brightness and avoid full-white high-current states.
  • Directly paralleling coin cells requires installing same type/age cells together; ideal-diode or per-cell isolation would be more robust but adds voltage drop/complexity. A single load-side P-MOS reverse-polarity device must not be assumed to protect against one cell inserted reversed while the other is installed correctly.
  • Firmware brightness/current caps are required but are not acceptable as the sole basis for a production safety or current-limit claim. Production release requires measured validation and documented low-battery behavior.
  • Flux currently represents this as a single project/layout unless split into separate board projects for independent per-board exports.
Production Release Gates Added 2026-07-11
  • Validate direct 2x CR2032 operation with actual assembled prototypes at fresh, mid-life, and low-cell conditions.
  • Measure VLED at MCU and LED1 during worst-case production animation pulses and confirm no reset/flicker/data-chain failure.
  • Complete one-cell-reversed and mismatched-cell fault analysis; add per-cell isolation/current limiting or document factory-matched/non-user-replaceable cells if required by product intent.
  • Add low-battery firmware behavior that reduces brightness or shuts down animation below a validated threshold.
  • Export red/top and black/bottom boards as separate JLCPCB packages and visually verify Gerber side/orientation, CPL side, standoff alignment, and connector pinout before ordering.
Change Notes
  • Initial production specification created from v2 brief.
  • Updated after user correction: direct bottom-board black/back artwork URLs are confirmed available and should not be skipped.

  • Project Overview

  • Intended Use

  • What the Device Should Do

  • Main Features

  • System Architecture

  • Hardware Subsystems

  • Interfaces and Connections

  • Power and Runtime Expectations

  • Power Tree and Power Budget

  • Manufacturing and Assembly Expectations

  • Firmware-Relevant Hardware Requirements

  • Physical Design Expectations

  • Important Design Decisions

  • Assumptions and Risks

  • Production Release Gates Added 2026-07-11

  • Change Notes

Documents

Assets

Updated black bottom-board reference art

Updated black bottom-board reference art

black_reference.png

Updated black bottom-board copper art

black_copper.svg

Bottom board top-face gold copper street-art

black_copper.svg

BLACK bottom board final AI street-art ENIG copper

black-bottom-front-copper-gold-final.svg
Updated black bottom-board reference art (no w00c0n wordmark; dendrites, robots, raised fist, ALTRUISTIC MERITOCRACY)

Updated black bottom-board reference art (no w00c0n wordmark; dendrites, robots, raised fist, ALTRUISTIC MERITOCRACY)

black_reference_updated_2026-07-11.png

Updated black bottom-board silkscreen art

black_silk_updated_2026-07-11.svg

Corrected cache-bypassed bottom black copper art fix2

black_copper.svg
Corrected bottom black-board reference art fix2

Corrected bottom black-board reference art fix2

black_reference_fix2.png

BLACK bottom board final AI street-art white silkscreen

black-bottom-front-silk-white-final.svg

Updated black bottom-board copper art

black_copper_updated_2026-07-11.svg

RED top board front silkscreen art

red-top-front-silk.svg

Updated black bottom-board silkscreen art

black_silk.svg

Corrected bottom black-board top copper art fix2

black_copper_fix2.svg

Corrected bottom black-board top white silkscreen art fix2

black_silk_fix2.svg

RED top board front ENIG copper neuron/w00c0n art

red-top-front-copper-gold.svg
w00c0n 30th Anniversary Two-Board Badge thumbnail
Production-intent two-board clamshell badge for w00c0n 30th anniversary: red top art board with inward-facing addressable LEDs and black bottom electronics/art board for JLCPCB turnkey assembly.

Properties

Pricing & Availability

Distributor

Qty 1

Arrow

$1.45–$2.24

Digi-Key

$0.78

HQonline

$0.54–$0.57

LCSC

$6.14–$6.30

Mouser

$3.95

TME

$4.80

Verical

$2.29–$4.51

Controls