Series
Grand Rapids hacker, cybersecurity, and AI conference lineage, represented here by the source-backed unofficial 2024 BadgeBuddy friend-distribution ESP8266 badge and its companion backpack scoreboard archive, plus the organizer-confirmed planned 2026 volunteer staff identity badge. The public staff terms do not identify the credential's physical form, electronics, technical function, or delivery.
Grand Rapids hacker, cybersecurity, and AI conference lineage, represented here by the source-backed unofficial 2024 BadgeBuddy friend-distribution ESP8266 badge and its companion backpack scoreboard archive, plus the organizer-confirmed planned 2026 volunteer staff identity badge. The public staff terms do not identify the credential's physical form, electronics, technical function, or delivery.
Badges
Unofficial ESP8266 proximity-animation badge
BadgeBuddy was an unofficial GrrCON 2024 electronic badge built for roughly thirty friends, using an ESP8266 WiFi module, an 8x8 LED matrix, battery power, proximity scanning for other BadgeBuddy SSIDs, and a public code/wiring archive.
Planned volunteer staff identity credential for Grand Rapids conference
A conservative planned GrrCON 2026 volunteer identity-artifact record from the organizer's official volunteer terms. The terms say selected volunteers will be given a GrrCON staff badge and say dismissal revokes that badge. The official home places the September 24-25 conference at DeVos Place in Grand Rapids, but neither source establishes the badge's material, electronic form, technical function, completed issuance, or use by general attendees.