Add-on dossier

224-LED front array

A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.

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visual badge surface

The Hackster materials list names 224 Adafruit 0805 LEDs, four 74HC595 shift registers, and sixteen 2N3904 transistors for the visual badge surface.

Badge
DerbyCon 7.0 Legacy Black Badge
Type
visual badge surface
Status
source-backed
Compatibility
DerbyCon 7.0 Legacy Black Badge
Source
https://www.hackster.io/blenster/derbycon-legacy-black-badge-ca2917

Badge context

Related Resources

Source trail

Evidence Sources

Hackster / Ben Hibben · retrieved 2026-05-15

DerbyCon Legacy Black Badge

Primary first-hand source proving the DerbyCon Legacy Black Badge artifact, black-badge lifetime-ticket framing, Ben Hibben and Charles Lehman maker context, BOM, fabrication steps, and compiled firmware artifact.

Badge: DerbyCon 7.0 Legacy Black Badge