DEF CON 34 · United States · 2026
Independent CH32V003 touch-and-audio SAO announced for DEF CON 34
BigFuckingBadge's live DEF CON 34 page presents a $20 OffensiveSAO around touching Lintile's face to play a "Don't Fuck It Up" cheer track. The public DEF CON 34 Badgelife response identifies that item as the DFIU SAO from BigFuckingBadge / Hexum064 and links public CH32V003 hardware and firmware repositories. The firmware's PlatformIO target is `genericCH32V003F4U6`; its `main.c` initializes touch ADC support, reads a touch input on PD2, starts sampled audio when the threshold is crossed, and configures a PWM audio path plus D/F/I/U and display LED outputs. The public hardware tree contains a KiCad PCB/schematic, BOM/position files, and Gerbers. Together these sources establish a real planned independent electronic SAO associated with DEF CON 34—not an official DEF CON issue, admission credential, confirmed handoff, final production revision, safety-tested product, open-source license grant, or rights-cleared image.
People
The DFIU Badgelife response links the public `Hexum064/dfiu-ch32v003-pcb` and `Hexum064/dfiu-ch32v003-code` repositories. This credit records visible repository-publisher context only, not sole authorship, final production responsibility, audio/artwork rights, DEF CON issuance, completed distribution, or image-reuse authority.
SourceBigFuckingBadge publishes the cited DEF CON 34 badges/SAOs page, and the public Badgelife response names BigFuckingBadge / Hexum064 for DFIU. This credit records visible seller/submission context only, not sole design, manufacture, audio/artwork rights, DEF CON organizer status, completed fulfillment, or image-reuse authority.
SourceDFIU is a compact current BadgeLife artifact with a meaningful implementation trail: a maker announcement is corroborated by a public roster and by code that exposes its touch, audio, and LED interaction model. The dossier records that source-backed trail while keeping the difference clear between public development files and a fully characterized, shipped, supported, or officially issued event artifact.
The public hardware repository visibly includes a KiCad PCB and schematic, BOM and position CSVs, and Gerber files. The public firmware configuration targets a CH32V003F4U6, and `main.c` declares an audio-enable line, a PWM audio output, a PD2 touch input, four D/F/I/U LED outputs on PD3-PD6, and eight display LED outputs on PC0-PC7; the published schematic also carries a speaker symbol. These source artifacts do not establish that every public file matches a final assembled board, nor identify the final MCU package/marking, LED parts/colors/counts, speaker/amplifier details, touch-electrode construction, SAO connector/version/pinout, power source, battery/charging path, voltage/current limits, dimensions, enclosure, assembly/test procedure, safety guidance, RF behavior, or compliance evidence.
The public firmware repository has a PlatformIO configuration for the `ch32v` platform, `genericCH32V003F4U6` board, and `ch32v003fun` framework. Its C source includes `ch32v003_touch.h`, initializes touch ADC support, samples PD2 through `ReadTouchPin`, starts the `audio_dfiu` sampled-audio path at the threshold, and updates letter/display LED outputs from timer-driven code. The source records a concrete interaction implementation, but reviewed roots do not provide a final release binary, release notes, flashing instructions, version-to-production mapping, signed update, backup/recovery path, accessibility guidance, security review, support commitment, or explicit LICENSE/COPYING grant.
The maker calls the $20 item an OffensiveSAO, invokes a Hacker Jeopardy vibe, Lintile's face, and a "Don't Fuck It Up" cheer track. The public Badgelife response supplies the DFIU name and connects it to BigFuckingBadge / Hexum064 and the two repositories. This catalogues seller and self-submission framing only; it does not establish authorization by, affiliation with, or endorsement from DEF CON, Hacker Jeopardy, Lintile, a named performer, or any other organization/person, and it does not determine the provenance or reuse rights of the audio, face/artwork, or product imagery.
Lifecycle
The public code repository defines a PlatformIO `ch32v` / `genericCH32V003F4U6` / `ch32v003fun` environment and provides C implementation material. It does not publish a final binary, release notes, version mapping, programmer details, full build prerequisites, flashing/recovery steps, signed update path, security review, support policy, or explicit license grant.
SourceThe hardware repository visibly contains a KiCad PCB and schematic plus BOM, position, Gerber, backup, and layout files. The published tree is useful for traceability, but this pass did not reconcile it against a final populated board, fabrication output, BOM sourcing, test procedure, connector pinout, power design, or any explicit source license.
SourceBigFuckingBadge's page presents a limited DEF CON 34 presale and an unlabeled $20 OffensiveSAO card, while the public Badgelife response names that artifact DFIU SAO and likewise gives $20. These published statements do not prove current inventory, payment, final price, manufacturing completion, shipment, pickup, event sale, refund, replacement, support, recipient allocation, or a completed handoff.
SourceThe source initializes touch ADC support, reads PD2 through `ReadTouchPin`, starts audio after a threshold, and updates the source-declared D/F/I/U and display LED outputs from timer-driven code. This is source-level evidence of the intended interaction, not a claim that every physical unit behaves identically or that its touch sensitivity, sound volume, audio content, LED population, timing, accessibility, or reliability has been independently tested.
SourceOperational history
The entry retains the factual seller framing while avoiding an inference that the named person, show, DEF CON, or any performer/rights holder authorized, sponsored, designed, endorsed, or licensed the SAO or its media.
The catalogue links the source trail without representing the artifact as fully open source, reproducibly buildable, safe to reflash, support-guaranteed, security-reviewed, or licensed for redistribution.
The entry can point to a concrete design archive without presenting the SAO as electrically complete, interoperable with every host, safe for every power source, fabricated, tested, or compliance-validated.
The catalogue records a source-backed independent event association without portraying the SAO as official conference hardware, a credential, access item, universal attendee handout, or a completed official distribution.
The planned 2026 record remains source-backed and image-free rather than copying storefront media, roster-linked media, repository PNGs/previews, schematics, screenshots, placeholders, or generated imagery.
Readers can distinguish public pre-event availability language from a completed sale, finished production run, or confirmed holder handoff.
The catalogue describes the published interaction mechanism without making claims about usability, accessibility, sensory safety, audio licensing, annoyance, final behavior, or suitability in a particular venue.