Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The badge used an 8x8 LED matrix for bouncing-pixel animation and a falling-code pattern once enough nearby BadgeBuddy networks were detected.
Badge context
Repository directory containing BadgeBuddy firmware and ESP8266 wiring diagrams.
Companion ESP8266 access-point and scoreboard sketch for the open `GrrCon WiFi` network and unique-client count display.
Arduino-style ESP8266 firmware for the `BadgeBuddy` SSID, 30-second WiFi scans, unique-BSSID counting, 8x8 LED matrix animations, and falling-code mode.
Official event site used for GrrCON's Grand Rapids hacker, cybersecurity, and AI conference identity; it does not claim BadgeBuddy was an official event badge.
Primary first-hand build writeup for BadgeBuddy distribution scope, ESP8266 and LED-matrix hardware, proximity behavior, cost notes, battery test, backpack companion, and image-rights boundary.
Public repository containing the GrrCon 2024 BadgeBuddy and Backpack of Shame code and wiring diagrams; GitHub reported no detected repository license in this pass.
Source trail
Primary first-hand source proving BadgeBuddy's GrrCON 2024 context, unofficial friend-distribution scope of roughly thirty badges, component list, proximity behavior, backpack companion, and GitHub release trail.
Primary companion firmware source for the open GrrCON-themed access point, MAC-address tracking, and four-matrix scoreboard.
Primary firmware source for BadgeBuddy AP+station mode, SSID scanning, BSSID counting, LedControl display behavior, and animation thresholds.
Primary public source repository for BadgeBuddy and Backpack of Shame code plus wiring diagrams; GitHub reported no detected repository license in this pass.
Official event source for GrrCON's conference identity and Grand Rapids context; no official-badge claim is derived from this page.