Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The badge reused surplus ZBD 55c-RB / EPOP55 electronic shelf labels with CC1110 control hardware and a bistable LCD that keeps its image without power.
Badge context
Secondary technical coverage corroborating the official badge claim, ZBD 55c-RB electronic shelf-label reuse, DB9 pogo programming approach, QR customization, and conference field workflow.
Official PhreakNIC 26 source for November 14-15, 2025 dates, Murfreesboro, Tennessee location, and Tyler Crumpton's electronic shelf-label talk.
Primary project-owner source for official-badge status, reclaimed ZBD 55c-RB / EPOP55 hardware, CC1110 pinout, flashing workflow, customization pipeline, production count, and credits.
Technical reference named by the project owner as the source code and documentation base for related ZBD EPOP shelf-label firmware work.
Tool source named in the project writeup as the ESP32-based CC1110 flashing path that informed the planned badge programming stations.
Source trail
Primary source proving that the artifact was the official PN26 electronic badge and documenting hardware, firmware, tooling, production, caveats, and thanks.
Referenced technical basis for related ZBD EPOP firmware behavior and display work used by the PN26 badge project.
Referenced tool repository for ESP32-assisted CC1110 flashing and the planned programming-station path.
Corroborating secondary source for the official badge, reclaimed shelf-label design, DB9 pogo-pin programming, QR customization, and field update fallback.
Official event source establishing PhreakNIC 26 dates, location, schedule context, and Tyler Crumpton's talk on electronic shelf labels.