Hack&Roll 2026 · Singapore · 2026

Hack&Roll 2026 Quack & Roll Badge

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.

Hack&Roll NUS Hackers Singapore ESP32-C3 ESP-IDF AW9523 GPIO Expander LED Buttons Hackathon Quack & Roll Southeast Asia Asia

EventHack&Roll 2026

SeriesHack&Roll

LocationCAPT / RC4, National University of Singapore

CountrySingapore

People

Authors & Credits

ESP32-C3 module sponsor

Espressif Systems

Repository acknowledgements say the ESP32-C3-WROOM-02-N4 modules were sponsored by Espressif Systems.

Source

Espressif liaison

Koh Chan Hong, Ravern / ravern

Repository acknowledgements credit Koh Chan Hong, Ravern / ravern for liaising with Espressif.

Source

Espressif liaison

Tan Rongwen, Daren / darentanrw

Repository acknowledgements credit Tan Rongwen, Daren / darentanrw for liaising with Espressif.

Source

PCB design guidance and badge-development support

Terence Chan Zun Mun / Hackin7

Repository acknowledgements credit Terence Chan Zun Mun / Hackin7 for PCB design, guidance on hardware-badge development, and liaison with Espressif.

Source

badge artwork

Park Youngseo / youngseopark05

Repository acknowledgements credit Park Youngseo / youngseopark05 for artwork.

Source

event organizer and firmware archive publisher

NUS Hackers

Repository and organizer posts identify NUS Hackers as the Hack&Roll organizer and MIT-licensed public archive publisher.

Source

hardware badge developer

Lim Yik Jin / yikjin

Repository acknowledgements credit Lim Yik Jin / yikjin for developing the hardware badge.

Source

Why It Mattered

It expands the Asian coverage beyond security conferences into Singapore's hacker-culture hackathon circuit, while preserving the difference between an event badge, a post-event workshop firmware demo, and unrecovered manufacturing files.

Hardware

The public repository identifies the badge as the Hack&Roll 2026 hardware badge, uses an ESP32-C3-WROOM-02-N4 module sponsored by Espressif Systems, and documents badge-specific LEDs and buttons accessed through a built-in GPIO expander. The component registry describes the hnr26_badge library for the badge's LEDs and buttons via the built-in GPIO expander, with an aw9523 dependency for the generic expander behavior.

Software & Apps

The MIT-licensed ESP-IDF firmware repository runs a simple dice-lighting demo that updates LEDs based on button presses. The firmware uses hnr26_badge APIs for badge-specific I/O, aw9523 GPIO-expander support, and a published ESP Component Registry package for adding the badge I/O library to ESP-IDF projects.

Lore

NUS Hackers says the badge was their first custom PCB badge and that participants personalized, colored, and hacked the hardware badges through the weekend. The Friday Hacks #287 talk framed Quack & Roll as the making of an electronic badge for over 1,000, covering ideation, artwork, electronics/code, assembly, and programming.

Lifecycle

Add-ons & Upgrades

badge I/O library source-backed

hnr26_badge ESP-IDF component

The Espressif component package exposes badge-specific control of Hack&Roll 2026 LEDs and buttons through the built-in GPIO expander.

Compatibility: Hack&Roll 2026 Quack & Roll Badge

Source

event talk source-backed

Quack & Roll making-of talk

Friday Hacks #287 framed the badge as an electronic-badge production story for over 1,000 units, spanning artwork, electronics/code, assembly, and programming.

Compatibility: Hack&Roll 2026 Quack & Roll Badge

Source

firmware demo source-backed

Dice LED/button firmware

The firmware README and main C source document a simple dice-lighting program driven by badge buttons and LEDs.

Compatibility: Hack&Roll 2026 Quack & Roll Badge

Source

microcontroller platform source-backed

ESP32-C3 badge core

The public repository acknowledgements say Espressif Systems sponsored ESP32-C3-WROOM-02-N4 modules for the Hack&Roll 2026 hardware badge.

Compatibility: Hack&Roll 2026 Quack & Roll Badge

Source

Operational history

Issues & Camp Impact

hackathon scope caveat note

Hack&Roll is a student-run hackathon rather than a traditional security conference, but the organizer source frames the event around hacker culture and documents a real custom PCB event badge.

The record is included as a hackable hacker-culture event artifact while keeping the event type explicit.

Confidence: organizer sources
Status: documented
Timeframe: Hack&Roll 2026
Source note: NUS Hackers Hack&Roll 2026 recap and Friday Hacks #287 talk page.

hardware archive gap note

The recovered public repository documents firmware and components but does not expose schematics, PCB layout files, BOM, Gerbers, or full manufacturing files for the badge.

Hardware claims stay limited to the organizer posts, repository README, code, component registry, and acknowledgements.

Confidence: current public archive
Status: needs deeper recovery
Timeframe: post-event archive
Source note: nushackers/hnr26-badge-workshop repository and Espressif Component Registry entry.

missing rights-cleared image note

NUS Hackers published event imagery, but no Hack&Roll 2026 badge image is promoted because this pass did not establish an explicit reusable image license, attribution basis, and processing provenance for catalogue publication.

The Singapore record remains source-backed and image-free rather than copying event photos or documentation screenshots without a complete image provenance record.

Confidence: local project policy
Status: needs licensed original replacement
Timeframe: current catalogue build
Source note: badge.gallery image policy and NUS Hackers event recap.

workshop-firmware caveat note

The public code is a badge workshop/demo firmware that lights dice LEDs from button input, so it is not treated as proof of every firmware image or challenge shipped during Hack&Roll 2026.

The software section separates the recoverable ESP-IDF workshop code from any unrecovered event firmware or private production tooling.

Confidence: repository documentation
Status: documented
Timeframe: post-event workshop archive
Source note: firmware README and firmware/main/main.c.

Resources

Friday Hacks #287 Quack & Roll making-of talk · NUS Hackers talk page for making an electronic badge for over 1,000, covering ideation, artwork, electronics/code, assembly, and programming. Hack&Roll 2026 badge workshop license repository license · Repository MIT license naming NUS Hackers as the 2026 copyright holder for the public firmware/workshop archive. Hack&Roll 2026 badge workshop repository firmware source · MIT-licensed NUS Hackers repository preserving ESP-IDF workshop firmware for the Hack&Roll 2026 hardware badge, component dependencies, documentation links, and badge acknowledgements. Hack&Roll 2026 firmware README firmware documentation · Repository README for the firmware tree, dice-lighting behavior, hnr26_badge and aw9523 dependencies, and generated documentation notes. Hack&Roll 2026 main firmware firmware source · ESP-IDF C entrypoint showing hnr26_badge initialization, button polling, virtual-pin updates, dice LED control, and 100 ms loop timing. Hack&Roll 2026 recap organizer recap · NUS Hackers recap describing Hack&Roll 2026, Singapore student-hackathon context, January cadence, and the first custom PCB badge participants personalized and hacked during the weekend. hnr26_badge ESP-IDF component component registry · Espressif Component Registry entry for the NUS Hackers hnr26_badge component used to control LEDs and buttons on the Hack&Roll 2026 badge via the built-in GPIO expander.

Sources

Espressif Component Registry: hnr26_badge Retrieved 2026-05-15 · Component registry source for the NUS Hackers MIT-licensed hnr26_badge package that controls LEDs and buttons on the Hack&Roll 2026 badge via the built-in GPIO expander. NUS Hackers: Hack&Roll 2026: Singapore's largest student-run hackathon Retrieved 2026-05-15 · Organizer source for the 2026 event context, first custom PCB badge statement, participant personalization/hacking behavior, and hackathon scale. NUS Hackers: Friday Hacks #287: Quack & Roll Retrieved 2026-05-15 · Organizer talk source for the badge's Quack & Roll name, 1,000+ electronic-badge making-of framing, and named Terence/Yik Jin speaker context. NUS Hackers / GitHub: nushackers/hnr26-badge-workshop Retrieved 2026-05-15 · Primary public source for the ESP-IDF workshop firmware archive, Hack&Roll 2026 hardware-badge scope, ESP32-C3-WROOM-02-N4 sponsor note, component dependencies, documentation links, and acknowledgements. NUS Hackers / GitHub: firmware README Retrieved 2026-05-15 · Primary repository documentation for the dice-lighting firmware behavior, hnr26_badge badge-specific I/O component, aw9523 GPIO-expander dependency, and documentation path. NUS Hackers / GitHub: LICENSE.md Retrieved 2026-05-15 · Repository license source establishing the MIT basis for the public firmware/workshop code archive, not for copying event photos into the catalogue.