Joyce Ng
Named as a presenter of the DC-SG-1 badge talk; the Cryptocurrency Village workbook also names Joyce Ng for the DCSG1 development workshop.
SourceDEF CON Singapore 2026 · Singapore · 2026
DEF CON Singapore 2026 DC-SG-1 Official Badge
ESP32-C6 attendee badge with Laser* Tag and hardware-hacking workflow
The inaugural DEF CON Singapore attendee badge, DC-SG-1, is an official electronic badge issued to ticket holders. Public event workshop and game documentation identifies an ESP32-C6 platform with eight megabytes of flash, an interactive hardware-hacking workflow, USB-C access, and a conference-wide infrared Laser* Tag game.
SeriesDEF CON Singapore
LocationMarina Bay Sands, Singapore
CountrySingapore
People
Authors & Credits
Michael Schloh
Named as a presenter of the DC-SG-1 badge talk; the Cryptocurrency Village workbook also names Michael Schloh for the DCSG1 development workshop.
SourceCircuit Crafters
The archived official badge guide attributes the DCSG1 badge to Circuit Crafters.
SourceDani Weidman
The archived official badge guide attributes the Laser* Tag game to Dani Weidman.
SourceDEF CON Singapore
Official event source for the inaugural Singapore conference that hosted the DC-SG-1 attendee badge.
SourceWhy It Mattered
It adds the missing primary attendee artifact for DEF CON Singapore's first edition while separating it from the already-seeded community HFSDR badge and village/finalist devices. The source trail is unusually useful for a current official badge: it documents the programming workshop, event game, and an interoperable IR protocol, but it does not amount to a released DCSG1 schematic or firmware archive.
Hardware
Public workshop material identifies an Espressif ESP32-C6 MCU in a castellated module with eight megabytes of flash, USB Type-C access, and an IPS-display/LVGL development surface. The official Laser* Tag archive separately documents an infrared emitter and receiver, colour-team feedback, and ESP-NOW communication with event base stations. Exact display part, RGB LED count, button count, battery arrangement, PCB files, BOM, and manufactured-revision details were not recovered.
Software & Apps
The conference programme introduced ESP-IDF, FreeRTOS, LVGL, USB CDC I/O for an Infocomm Z-Machine simulator, and alternative Arduino, Rust, TinyGo, MicroPython, RIOT, Eclipse, and Visual Studio workflows. The badge stored Laser* Tag hit records locally, periodically synchronized aggregate scores to online leaderboards through ESP-NOW base stations, and officially supported the MIT-licensed OpenLASIR infrared compatibility protocol. No DCSG1-specific public firmware, binary, protocol archive, or source tree is claimed.
Lore
DC-SG-1 marked DEF CON's first Singapore event. Its public badge talk describes a device designed to invite hardware hacking, and the Laser* Tag game put every powered-on attendee badge into one of five teams: Cyan, Magenta, Yellow, Blue, or Orange. The official game archive attributes the DCSG1 badge to Circuit Crafters and Laser* Tag to Dani Weidman.
Lifecycle
Add-ons & Upgrades
conference access
public talk-backed
Official attendee-badge distribution
The public DC-SG-1 badge talk describes the electronic hacker badge as given to ticket holders for entry to DEF CON Singapore.
Source
development workshop
public programme-backed
DCSG1 hardware-hacking workshops
The Cryptocurrency Village workbook lists feature, simulator, and development workshops for the badge, including an ESP-IDF toolchain workflow and USB Type-C cable requirement.
Source
event infrastructure
archived official guide
ESP-NOW scoreboard synchronization
Badges retained hit records locally and periodically synchronized results through internet-connected exhibit-hall base stations using ESP-NOW with periodic channel and data-rate hopping.
Source
infrared game
archived official guide
Laser* Tag multiplayer game
Every powered-on official badge played an infrared Laser* Tag game with five color teams, valid-hit cooldowns, and individual contributions to aggregate team scores.
Source
interactive software
public workshop-backed
USB CDC Z-Machine simulator
The programme invited attendees to explore the Infocomm Z-Machine simulator with I/O on the USB CDC console and optionally program the badge.
Source
open protocol
source-backed
OpenLASIR protocol interoperability
The official badge supported the public OpenLASIR infrared protocol, allowing compatible third-party devices to join the game while tracking official and third-party interactions separately.
SourceOperational history
Issues & Camp Impact
event-service lifecycle caveat
note
The archived guide documents internet-connected ESP-NOW base stations and an online scoreboard, but the public source trail does not provide a durable service-status commitment, full score export, base-station implementation archive, or post-event operation guarantee.
The record treats the score and synchronization system as documented event-time behavior, not a permanently available badge service.
- Confidence
- archived official guide
- Status
- post-event service state not preserved
- Timeframe
- DEF CON Singapore 2026 event infrastructure
- Source note
- DEF CON Singapore Official Badge Laser* Tag archive.
hardware and firmware archive gap
note
The recovered sources identify the ESP32-C6 platform, flash capacity, IR game hardware, software frameworks, and development workflow, but do not publish a DCSG1-specific schematic, PCB files, BOM, final firmware source, binary release, exact display model, power design, or production quantity.
The dossier describes only the substantiated hardware and software surface instead of inferring a complete board design or claiming that the separate OpenLASIR repository is DCSG1 firmware.
- Confidence
- source-backed but incomplete
- Status
- needs public DCSG1 archive
- Timeframe
- post-event source pass
- Source note
- Cryptocurrency Village 2026 workbook, DEF CON Singapore Official Badge Laser* Tag archive, and OpenLASIR repository.
missing rights-cleared image
note
No DC-SG-1 image is published because the official badge archive's diagrams and related public attendee images have not been paired with explicit reusable licensing, attribution, and processing provenance for badge.gallery publication.
The official Singapore attendee-badge record remains image-free rather than copying a guide illustration, social post, documentation screenshot, or generated approximation.
- Confidence
- local project policy
- Status
- needs licensed original replacement
- Timeframe
- current catalogue build
- Source note
- badge.gallery image policy, DEF CON Singapore Official Badge Laser* Tag archive, and public conference-badge materials.
Resources
Cryptocurrency Village 2026 workbook
workshop programme · Public programme PDF for the DCSG1 feature, simulator, and development workshops: ESP32-C6, eight megabytes of flash, ESP-IDF, FreeRTOS, LVGL, USB CDC, and alternative development workflows.
DEF CON Singapore 2026 event page
event page · Official DEF CON page anchoring the April 28-30, 2026 Singapore conference at Marina Bay Sands, the host event for the official DC-SG-1 attendee badge.
DEF CON Singapore Official Badge Laser* Tag archive
game guide · Archived official-badge guide for the infrared Laser* Tag game, local hit records, five teams, ESP-NOW base-station synchronization, DCSG1 ESP32-C6 attribution, Circuit Crafters board credit, and Dani Weidman game credit.
Hacking the DC-SG-1 Badge
badge talk · Public DEF CON Singapore talk record naming DC-SG-1 as the electronic badge issued to ticket holders and describing its hardware-hacking, application, and interaction context.
OpenLASIR protocol repository
compatibility protocol · MIT-licensed public infrared compatibility reference that explicitly lists official DEF CON Singapore 1 conference-badge support; it is a protocol reference, not a DCSG1 firmware or hardware release.
Sources
Cryptocurrency Village: Cryptocurrency Village 2026 workbook
Retrieved 2026-05-15 · Primary workshop-programme source for the DCSG1 feature and development sessions, including ESP32-C6, eight megabytes of flash, ESP-IDF, FreeRTOS, LVGL, USB CDC, and alternative programming workflows.
DEF CON: DEF CON Singapore
Retrieved 2026-05-15 · Official event-context source for the April 28-30, 2026 DEF CON Singapore conference at Marina Bay Sands, the host event for the DC-SG-1 attendee badge.
Dani Weidman: DEF CON Singapore Official Badge Laser* Tag archive
Retrieved 2026-05-15 · Direct official-badge game guide identifying DC-SG-1 as the 2026 official badge, documenting IR emitter/receiver game behavior, local hit records, teams, scoreboard logic, ESP-NOW base stations, Circuit Crafters board attribution, and Dani Weidman game credit.
GitHub / danielweidman: OpenLASIR
Retrieved 2026-05-15 · Public MIT-licensed protocol repository that states OpenLASIR is supported on the official DEF CON Singapore 1 conference badge; it documents compatibility protocol behavior rather than the badge's complete firmware or hardware.
Thinkst Citation / DEF CON Singapore 2026: Hacking the DC-SG-1 Badge
Retrieved 2026-05-15 · Public conference talk record describing DC-SG-1 as the electronic hacker badge given to ticket holders and identifying its hardware-hacking, application, and interaction framing.