California · Hacker Con Badges

BSides San Diego 2024 · United States · 2024

BSides San Diego 2024 ESP32-C3 Badge

ESP32-C3 BLE rock-paper-scissors conference badge

Somerset Recon's post-event source archive says 400 badges were distributed at BSides San Diego 2024. It documents a custom ESP32-C3 conference board with a Bluetooth LE rock-paper-scissors game, high-level Wargames-themed UART and SAO CTF context, and KiCad, Gerber, BOM, and Arduino-style source material. The README also distinguishes the conference units' earlier firmware from later archived source behavior.

BSides San Diego BSidesSD United States San Diego California Electronic Badge ESP32-C3 Bluetooth LE Rock Paper Scissors CTF Badge SAO UART Arduino Custom PCB North America

BSides San Diego 2026 · United States · 2026

BSides San Diego 2026 Cyberpunk Bunny Badge

ESP32 portable CTF badge

BSides San Diego 2026 handed attendees a Cyberpunk Bunny electronic badge: an ESP32-powered portable CTF with cryptography challenges, wireless hacking, hidden secrets, an accelerometer-driven oracle, BLE co-op behavior, and an ultimate hidden flag path.

BSides San Diego BSidesSD United States San Diego California Electronic Badge Cyberpunk Bunny ESP32 CTF Badge Bluetooth LE Accelerometer Cryptography Electronic Cats North America

Open Sauce 2026 · United States · 2026

Open Sauce 2026 Badge

SauceBot / Arduino Sopracciglio electronic badge with a post-event KiCad archive

Open Sauce 2026's SauceBot badge is documented by Caleb Marting's post-event public archive as an Arduino MKR Zero-compatible electronic badge with native KiCad sources, firmware, a microphone, button, red LEDs, battery holder, and optional Simple Add-On headers. The archive says at least two attendees hacked badges Saturday night and brought four new games on Sunday; an independent attendee firmware archive also describes receiving an eyebrow module and replacing the original Bop It-style firmware. Together the sources establish a real festival artifact and hands-on hacking trail, not a universal attendee allocation or organizer-owned source release.

Open Sauce Open Sauce 2026 United States California San Mateo Maker Festival Electronic Badge Arduino MKR Zero Arduino Sopracciglio SAO Bop It KiCad MIT North America