Tag dossier
Badge records tagged with Buzzer, across Canada, Dominican Republic, Mexico, United Kingdom, United States.
ESP32 North Sectoria RPG badge
NorthSec's official 2021 badge page and repository document an ESP32 electronic badge with Wi-Fi, BLE, 240x240 color LCD, NeoPixel RGB LEDs, six buttons, buzzer, UART serial port, micro-USB or external battery power, ESP-IDF firmware, and ten badge flags tied to the North Sectoria game theme.
RP2040 audio, microphone, LEDs, and EdgeImpulse badge
BugCON 2022's Electronic Cats badge repository documents an RP2040 electronic badge for BugCON 2022 CDMX with USB serial access, LEDs, microphone, buzzer or speaker, a small machine-learning trail through EdgeImpulse, Arduino Mbed programming notes, KiCad hardware files, and Blink/AudioWAV firmware examples.
First official Dominican Republic badgelife badge
HackConRD 2024's first official badge was an ATTiny85-based electronic conference badge documented by a public repository and workshop writeup, with lanyard wear, challenge/hidden-feature firmware, serial reprogramming, aRGB LED expansion, buzzer output, and KiCad manufacturing-file evidence.
Electronic Cats OLED and RF-detector badge
The 44CON 2025 badge is a public Electronic Cats hardware and firmware project that can run with a CH32-style shield for an OLED mini-game or with an ESP32 Wemos D1 module plus optional buzzer, MT3608 boost converter, AD8317 RF detector, and add-on board.
Badge Pirates CC13 ESP32-S3 badge archive
The CactusCon 13 badge is preserved through Badge Pirates' public CactusCon13 repository, which publishes KiCad CAD files, Gerber output, outer-board variants, 3D-print assets, ESP32-S3 reference material, and a MIT-licensed source archive for the 2025 CactusCon badge.
ESP32 touch-wheel badge with TFT, audio, LEDs, and games
The THOTCON 0xD badge was a Fourfold-built electronic conference badge for the May 30-31, 2025 Chicago event, documented as a 2,000-unit ESP32 touch-wheel badge with ST7789 TFT display, buzzer, six LEDs, LiPo power, add-on header, games, visual effects, and challenge hooks.
Independent planned ESP32-S3 battle-game badge project for DEF CON 34
Cyber Professionals Enthusiast Club's public `DC34-Mech-Badge` repository calls the work the DC 34 MechBattle Badge, describes it as the second iteration of menu and game logic for a CPEC DC34 badge offering, and says it is not final; its GitHub description explicitly calls it a DEFCON 34 Mech Badge by CPEC. A second CPEC repository publishes an in-progress PlatformIO/Arduino game codebase targeted at an Adafruit Feather ESP32-S3 no-PSRAM board, with source-level display, Bluetooth Low Energy, QR, and sound surfaces. A third CPEC repository says it contains design files for SAO plug-in modules for the CPEC DC 34 badge; its commit-pinned source tree includes native KiCad project, PCB, and schematic paths with fist, gatling, laser, missile, panel, and sword filenames, an Arduino source file, and BOM/placement artifacts. The linked game-mechanics document is also a draft. These primary sources establish a real independent planned badge and companion-add-on design trail, not final physical hardware, manufactured units, electrical compatibility, availability, event authorization, DEF CON organizer affiliation, admission, deployed radio behavior, or reusable-image rights.
Pre-event independent two-object ESP32-S3 interaction badge project for DEF CON 34
Two contemporaneous project posts authored by the public Reddit account u/zer0patient and signed H4irl1n3 M0gg3r5 describe an independent planned DEF CON 34 Zombie Badge project. The later source explicitly describes two objects using ESP32-S3, IR, NFC, BLE, a buzzer, and a source-described transmission/counter relationship; it also announces a firmware-based, multi-stage CTF and an unreleased backend. It further describes crew-operated live transmission zones, fixed Cure Stations, hidden 3D-printed medkit props, and a separate brain-in-a-jar SAO. The earlier post calls the work the team's first year making badge or badges, says a second variant is part of the experience, and announces intended drop-based distribution. These are source-backed pre-event maker statements about a real planned artifact system, not proof of final manufactured variants, component selection, wireless behavior, game implementation, inventory, drops, event authorization, DEF CON organizer affiliation, conference admission, or reusable-image rights.