DEF CON 34 · United States · 2026
Independent PFC161 two-LED message SAO update announced for DEF CON 34
BigFuckingBadge's public DEF CON 34 Badgelife response calls IFLFU SAO an update to an existing SAO, lists it at $20, and says it illuminates the words "I FUCKING LOVE FUCKING YOU" with the two "FUCKING" illuminations randomized. The same maker's live DEF CON 34 page has an unlabeled $20 OffensiveSAO card about a simple rectangle that sends a message at random; the roster supplies the direct IFLFU name/repository mapping. Hexum064's public `iflfu-v2-pfc161` C source includes PFC161 headers and drives two active-low LED outputs, each with an LFSR-based timing state, while the public hardware repository carries KiCad front/back boards and schematics, BOM/position files, Gerbers, and SAO-spacer models. These sources establish a real planned independent electronic SAO update associated with DEF CON 34—not official conference issuance, admission, a fully recovered earlier lineage, completed fulfillment, final production parity, safe/electrically characterized hardware, a source-license grant, or a rights-cleared image.
People
The IFLFU Badgelife response links the public `Hexum064/iflfu-v2-pfc161` and `Hexum064/iflfu-hardware` repositories. This credit records visible repository-publisher context only, not sole authorship, final production responsibility, message/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 IFLFU. This credit records visible seller/submission context only, not sole design, manufacture, message/artwork rights, DEF CON organizer status, completed fulfillment, or image-reuse authority.
SourceIFLFU is a useful example of an explicit current update whose public roster supplies the artifact name and visible behavior while its code exposes a small but concrete randomized-light implementation. The dossier retains the distinction between an advertised, source-backed message SAO update and a complete historical lineage, final manufactured unit, official event credential, or reusable media package.
The public `iflfu-hardware` repository contains a PFC161 datasheet, KiCad PCB/schematic/project files for full and front boards, BOM/position material, front/back/prototype Gerbers, and multiple SAO-spacer model files. The public C source targets PFC161 headers and declares two LED outputs on PA4 and PA5 using active-low current sinking. These files do not identify the final shipped board population, PFC161 package/marking, LED type/color/optics, exact lettering/illumination construction, resistor values, SAO connector version/pinout, host requirements, input voltage/current limits, power source, battery/charging path, protection, dimensions, materials, assembly/test results, safety instructions, compliance, or compatibility with any specific badge host.
The public `iflfu-v2-pfc161` repository contains a Makefile, Easy PDK material, and a 173-line C implementation. The code disables the watchdog, selects an internal high-frequency clock divider, configures PA4/PA5 as active-low LED sinks, keeps independent per-LED LFSR state, derives subsequent delays from each LFSR, and performs a short flash when an LED transitions on. That supports a source-level randomized two-channel-light behavior, but it does not establish the exact final illuminated words, random-distribution characteristics, source flashing workflow, toolchain versions, final binary, release/version mapping, signed updates, recovery path, security review, accessibility, support, warranty, or an explicit LICENSE/COPYING grant.
The public roster spells the artifact IFLFU SAO, calls it an update to an existing SAO, gives a $20 price, and describes the explicit phrase and random illuminated-word behavior. BigFuckingBadge's current page separately describes an unlabeled $20 OffensiveSAO as its original/first SAO and a simple rectangle that sends a romantic-and-raunchy message at random. This record uses the roster for the exact mapping and preserves the seller's presentation without asserting which older edition the update replaces, who authored the message/artwork, any recipient consent, content-rating suitability, or authorization, affiliation, or endorsement from DEF CON or another person/organization.
Lifecycle
The hardware repository visibly contains KiCad board/schematic/project material, BOM/position data, front/back/prototype Gerbers, backup files, and a PFC161 datasheet. The published tree is traceability evidence, but this pass did not reconcile it to a final populated unit, fabrication order, component sourcing, test procedure, connector/power design, or explicit license.
SourceThe hardware archive includes several `iflfu-sao-spacer` model-file variants in OBJ, MTL, and 3MF forms. Their presence documents an accessory-design trail, not a shipped spacer, a particular revision, a compatible host, printed-material safety, fit, durability, included accessory, or permission to republish model or image assets.
SourceThe BigFuckingBadge page supplies a limited DEF CON 34 presale setting and an unlabeled $20 OffensiveSAO card, while the public Badgelife response names IFLFU SAO as an update to an existing item and gives $20. Those source statements do not prove current inventory, payment, final price, manufacture, shipment, pickup, event sale, recipient allocation, refund, replacement, support, or a completed handoff.
SourceThe public C source includes PFC161 headers, configures active-low PA4/PA5 LED outputs, keeps separate LFSR state per channel, derives individual delay targets, and flashes channels from its main loop. This is source-level evidence for a two-channel randomized-light implementation, not proof of the exact final illuminated words, distribution of outcomes, timing, brightness, physical LED population, or behavior of every produced unit.
SourceOperational history
The entry preserves factual source language without claiming that any named/unnamed party authored, approved, sponsored, designed, endorsed, licensed, or consented to the message, artwork, or presentation.
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 archive without representing 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 completed official distribution.
The planned 2026 record remains source-backed and image-free rather than copying storefront media, roster-linked media, repository previews, KiCad/schematic renders, spacer-model previews, 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 record preserves the visible update/v2 trail without inventing a previous event, assigning an exact earlier version, merging unknown revisions, or treating the seller card as standalone proof of historical IFLFU distribution.