rad1o
CCCamp 2015 SDR badge
A HackRF-inspired software-defined radio badge that let campers receive, transmit, inspect spectrum, flash evolving firmware, solder RF add-ons, and keep hacking long after camp.
Hacker Con Badges
Worldwide hacker con badge compendium. Explore the hardware, firmware and stories behind the badges.
641 badges · 540 events
Badges around the world
Eight starting points across six continents. Every record links back to its sources.
Off-By-One 2024 Hardware Badge
Singapore dual-screen Octopus badge
Off-By-One Conference 2024 used an Octopus-themed hardware badge with ESP32-S3 and ATmega328P controllers, dual 128x128 GC9A01 round LCDs, IR, WS2812 LEDs, buttons, a user-flashable MicroPython challenge surface, and six published challenge flags.
Ekoparty 2024 Official Badge
ESP32-C6 LoRa badge
The official Ekoparty 2024 electronic badge documented by Electronic Cats with ESP32-C6 control, RFM95 LoRa radio, OLED display, NeoPixels, USB, buzzer, KiCad hardware files, firmware sources, Badge Connect behavior, and a community Meshtastic variant trail.
NorthSec 2025 Badge
ESP32-C3 conference and CTF badge with SAO and IR pairing
NorthSec 2025's official badge repository documents an ESP32-C3-WROOM-02-N4 badge with eighteen NeoPixel RGB LEDs, five buttons, an IR pairing connector, two SAO v1.69bis connectors, USB-C or AAA battery power, and separate conference/CTF firmware builds.
LCA2017 IoTuz ESP32 Board
linux.conf.au Open Hardware Miniconf ESP32 badge board
linux.conf.au 2017's Open Hardware Miniconf centered on IoTuz, an ESP32-based custom board documented by the official schedule, CCHS Melbourne hardware and firmware repositories, workshop setup notes, and attendee driver work.
BSides Cape Town 2016 Badge
ESP8266 IR faction-game badge
A BSides Cape Town 2016 badge built around ESP8266, 128x64 OLED display, eight UI buttons, rear reset and program buttons, IR transmit and receive, level LEDs, faction RGB LED, USB-charged 600 mAh LiPo, schedule UI, challenges, and an organic faction game.
flow3r
CCCamp 2023 music and light badge
A petal-shaped electronic instrument where touch and gestures become sound and light.
DEF CON 27 Badge
Crystal NFMI badge-game platform
A Grand Idea Studio DEF CON 27 badge built around NXP hardware with a KL27 ARM Cortex-M0+ controller, NFMI communication, quartz or crystal face details, role-specific badge identity, public firmware and schematics, and a conference-wide interaction game.
Upcoming and pre-event records
Publicly announced badges are kept separate from the established lineage until shipped hardware and post-event evidence are available.
BSides Orlando 2026 Planned LED Badge
Organizer-published four-LED KiCad badge design for the upcoming September conference
BSides Orlando's official GitHub organization published 2026-badge, a public KiCad 10 schematic and PCB project, as the conference's current 2026 badge-design trail. The schematic identifies four 3 mm blink-labeled LEDs, a Keystone 3002 1x2032 cell-holder footprint, an MST22D18G2 125 power-switch component, and a 2x3 2.54 mm socket. The official event site sets the conference for September 26 at Full Sail Live in Winter Park, Florida. This supports a planned organizer-published discrete LED badge design, not a released or allocated physical badge, attendee credential, finished BOM, final board revision, firmware, or image license.
RomHack Camp 2026 Badge
Pre-event unique hardware badge challenge
A current pre-event record for the October 2-4, 2026 RomHack Camp at Flaminio Village, whose public event site and participant FAQ advertise a unique hardware badge and collectible challenge rather than final shipped hardware details.
BSides Lisbon 2026 Electronic Badge
Planned Portuguese Security BSides electronic badge; technical details pending
BSides Lisbon's current official 2026 About page says the October 29-30 conference will have talks, networking, an electronic badge, and a CTF. The official home and location page place the planned event at Auditório Prof. Simões dos Santos in Lisbon, and the current team page lists Pedro Umbelino under Badge. This is a source-backed planned electronic-badge programme, not evidence of a completed board, technical implementation, or badge-linked CTF.