Tag dossier
Badge records tagged with ESP32-C3, across Canada, Denmark, Dominican Republic, Germany, Italy, Mongolia, New Zealand, Singapore, United States.
ESP32-C3 electronic badge for Hacking in Parallel
The Hacking in Parallel Berlin attendee badge was an ESP32-C3 electronic badge with RGB LEDs, USB-C Serial/JTAG, battery charging, NFC/I2C storage, SAO/I2C expansion, buttons, and RIOT OS board support.
ESP32-C3 dragon-sphere camp badge
A Cyber Saiyan-designed ESP32-C3 badge for RomHack Camp 2022, with seven RGB LEDs, BLE badge discovery, schedule screens, WiFi/AP functions, snake, a 2.4 inch TFT, two rear buttons, and AA battery power.
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.
ESP32-C3 POV badge
An ESP32-C3-oriented BornHack badge with public firmware links, POV hardware files, Rust examples, workshop firmware, and a 3D-printable case branch.
ESP32-C3 badge with Badge Clinic and MicroPython workflow
The HOPE XV Electronic Badge was issued to in-person attendees as an ESP32-C3 badge with purple attendee boards, black pro boards, case variants, 16 WS2812-class RGB LEDs, buttons, IR blast behavior, vibration feedback, open hardware files, and MicroPython hacking notes.
Unofficial ESP32-C3 handheld-style DEF CON 32 badge
The Hackbat Badge is an unofficial DEF CON 32 badgelife board documented by the Hackbat project page and GPL-3.0 GitHub repository, with ESP32-C3 Wi-Fi/BLE, OLED display, WS2812 LEDs, six buttons, AA-cell case support, and production files.
ESP32-C3/NFC electronic badge with first-party binaries and later public source
BSides Vancouver's official 2025 badge page calls the artifact an electronic badge, links its first-party programming bundle, and directs firmware information to a public project archive. That archive documents a 2025 REV 2 board and a public firmware refactor committed in 2026, so this record separates the completed 2025 artifact from the later source-tree revision.
Transparent PET flex-PCB cube conference badge
A completed Italian End Summer Camp {21} electronic badge whose organizer-owned badge-2025 repository explicitly calls it a flex-PCB badge distributed at ESC{21}. The public archive includes KiCad hardware, Gerbers, a BOM, placement data, folding material, a case directory, and firmware material; an author retrospective and first-person maker project document a transparent PET board folded into a cube. Public sources do not establish a recipient total, final unit-by-unit configuration, safety certification, a unified final firmware release, or reusable image provenance.
LoRa and Meshtastic badge
A circular ESP32-C3 badge focused on LoRa, Meshtastic, WiFi, BLE, RGB LEDs, external antenna use, and expansion connectors.
ESP32-C3 pukeko badge with OLED, RGB LEDs, Rust VM, and Minecraft server
CHCon 2025's attendee badge was a custom circuit-board badge with an ESP32-C3, SSD1306 128x64 OLED, 24 WS2812 RGB LEDs, USB Serial JTAG shell access, bare-metal Rust firmware, a stack-based pattern VM, and a Minecraft 1.21.4 challenge server.
Completed 418-unit, three-variant MNCERT/CC electronic-badge collection
A completed MNSEC 2025 electronic-badge collection commissioned by MNCERT/CC and documented by Beelog Technologies. Beelog's public project page states that it designed, manufactured, and developed 418 electronic badges for MNCERT/CC; the public MNSEC2025BADGE archive identifies the order with the September cybersecurity conference, says three badge types were completed, and preserves Gerber, schematic, firmware, example-code, and supporting-material directories. The sources do not establish attendee allocation, a per-unit delivery record, final unit-by-unit configuration, safety validation, or reusable image provenance.
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.
Pre-event ESP32-C3 bat-shaped LED party-fundraiser badge
Gothcon's official badge store describes a custom bat-shaped PCB LED badge for the free Gothcon dance party at DEF CON 34. The $80 fundraiser package names 44 independently controlled RGB LEDs, a 2,000 mAh Li-Po battery, USB-C recharging with overcharge protection, a removable laser-etched acrylic shield, a custom lanyard, and an ESP32-C3 with 4 MB flash. The public `claviger/gothcon-firmware` repository adds MicroPython firmware, KiCad schematic/PCB/Gerber material, GPIO mapping, pattern/palette controls, and ESP-NOW badge-to-badge contagion. The store explicitly says its SAO connectors are mirrored and not functional with a standard SAO. Pre-orders are closed and the store says badges will be sold at DEF CON; this remains a pre-event party-fundraiser record, not proof of final sales, delivery, party outcome, or official DEF CON credential status.
Singapore custom PCB hackathon badge
NUS Hackers' Hack&Roll 2026 introduced the event's first custom PCB badge, documented by the organizer recap, a Friday Hacks making-of talk, and a public MIT-licensed ESP-IDF firmware and component archive.
ESP32-C3, CC1101, TFT, games, and RF badge
HackConRD 2026's eBadge was documented by the official HackConRD site, the EBADGE+ ticket tier, the interactive eBadge page, and a public firmware repository that describes an ESP32-C3 badge with ST7789 TFT, CC1101 433 MHz radio, WS2812B LEDs, buzzer, four-button navigation, games, RF friend exchange, fox hunting, learning modules, and persistent profile settings.
Pre-event independent ESP32-C3 touchscreen badge project for DEF CON 34
Aask42's public MidWestCoastBadge repository identifies an independent MidWestCoast Badge project, labels its firmware as DEF CON 34 badge firmware, and frames it around a MidWestCoast Party / IoT-hacking context. Its commit-pinned firmware README names an ESP32-C3 driving a 240×320 ST7789 IPS panel plus a capacitive touch controller at I2C address 0x15, with swipe-and-tap controls and no buttons. A project MVP note identifies the Arduino/C++ tree as the current implementation. DEF CON's own registration page independently establishes the August 6-9, 2026 Las Vegas conference context. These sources support a real pre-event independent electronic-badge project associated by its publisher with DEF CON 34, not proof of final physical units, party or event authorization, DEF CON issuance or endorsement, allocation, price, delivery, attendance, admission, deployed firmware, or reusable-image rights.
Pre-event ESP32-C3 commemorative badge for Whose Slide's tenth DEF CON year
Whose Slide Is It Anyway?'s maker storefront offers a $75 10 Year Anniversary Badge and says it is limited to 100 units. The listing describes an ESP32-C3, 24 RGB LEDs, three pre-programmed sound effects with corresponding light shows, and a silkscreen replication of its Whose Slide gong artwork. Its public Shopify product payload currently marks the only variant unavailable; that is an availability snapshot, not evidence that all 100 were made, sold, shipped, or collected. The maker says buyers may arrange DEF CON pickup this year or shipment by early August. The current public DC34 contest listing describes 2026 as the contest's tenth year, and the public DC34 BadgeLife index separately lists this artifact. This is a source-backed independent pre-event commemorative badge record, not proof of final production, final firmware/board revision, completed charity distribution, official DEF CON affiliation, conference admission, or reusable-image rights.