DEF CON 34 · United States · 2026

Firefly Jar SAO (DEF CON 34)

Sold-out pre-event Lepi Labs SAOv3-proposal lighting Simple Add-On for DEF CON 34

Lepi Labs' own Uberflux listing identifies the Firefly Jar as a DEF CON 34-drop Simple Add-On. Its August 4, 2026 marketplace state is out of stock, with 25 sold, zero remaining, and a $25 listed price. The maker describes seven orange reverse-mounted LEDs, an ATtiny824 controller, UPDI reprogramming, vendor commands, and compatibility with Rare Circuit's proposed SAOv3 I2C-based interface. It says the SAO can expose vendor/product IDs, port and command metadata, generic LED controls, and its own lighting modes; the listing also explicitly says it does not support SAOv3 ARP or hot-plugging features. Lepi Labs' first-hand DC34 announcement corroborates planned Friday and Saturday BadgeLife Village drops. This is a source-backed pre-event independent lighting SAO, not proof of final host interoperability, full SAOv3 implementation, firmware release, delivery, DEF CON organizer affiliation, conference admission, or reusable-image rights.

Lepi Labs Firefly Jar DEF CON 34 United States Las Vegas Pre-event SAO Simple Add-On SAOv3 I2C ATtiny824 Reverse-Mounted LEDs UPDI Lighting Open Proposal Independent Badge BadgeLife North America

EventDEF CON 34

SeriesDEF CON

LocationLVCC West Hall, Las Vegas, Nevada

CountryUnited States

People

Authors & Credits

source-named Firefly Jar artwork credit

RaiVesper

The Lepi Labs product page says Art by RaiVesper. This records the stated artwork credit only; it is not an image-reuse license or proof of hardware, firmware, manufacturing, or event role.

Source

source-named SAOv3 proposal credit

Rare Circuit

The Lepi Labs product page identifies the interface as Rare Circuit's SAOv3 proposal. This preserves a narrow proposal attribution without claiming a final standard, code reuse, formal endorsement, protocol conformance, or image-reuse authority.

Source

source-named maker and product publisher

Lepi Labs

The live Uberflux listing identifies Lepi Labs as the maker, and the first-hand announcement speaks as the group. This records its public maker/publisher role without inferring individual engineering authorship, production responsibility, DEF CON organizational status, or image-reuse authority.

Source

Why It Mattered

The Firefly Jar is a useful time-stamped record of a maker publicly shipping toward a proposed, not universally implemented, SAO extension. Its entry preserves the concrete ATtiny/LED and command claims, plus the unusually valuable non-support statement for ARP and hot plugging. It avoids turning proposal language into a standard, every host into a compatible host, a hidden feature tease into published content, or a storefront image into a reusable catalogue asset.

Hardware

The maker lists seven orange reverse-mounted LEDs and an ATtiny824 MCU, and says it can be reprogrammed using an adapter not included. The source says v1.0 changes labeling and swaps I2C and GPIO pins from v0.1. It does not identify LED part numbers or current limits, ATtiny configuration, power source/power budget, I2C electrical levels or pullups, connector/pinout, dimensions, schematic, BOM, PCB/Gerbers, enclosure, final test data, safety guidance, or a host-compatibility matrix.

Software & Apps

The listing says the SAO implements Rare Circuit's SAOv3 proposal over I2C, supports vendor commands and multiple lighting modes, can offer generic LED-interface control to a host, and may contain an undisclosed secret. It explicitly excludes SAOv3 ARP and hot-plugging support. No reviewed source publishes its firmware, source repository, binary, protocol version, exact command schema, vendor/product IDs, host-side implementation, build/flash instructions, secret content, update/recovery path, license, or interoperability testing.

Lore

Lepi Labs presents the Firefly Jar as a wearable PCB/acrylic device and announced it alongside two other SAOs for DEF CON 34. The first-hand post gives Friday 12:30 PM and Saturday 2:30 PM BadgeLife Village drop plans, while the product page identifies DEF CON 34 drops. These establish planned independent event distribution, not a documented delivery outcome, fixed inventory, venue authorization, official DEF CON issuance, conference access, or a guarantee that participating hosts will implement the proposal.

Lifecycle

Add-ons & Upgrades

maker-described compatibility boundary official maker product note

v1.0 pin-change trail and no-ARP/no-hot-plug statement

The listing says v1.0 changes labeling and swaps I2C and GPIO pins from v0.1. It explicitly says the SAO does not support SAOv3 ARP or hot-plugging features. This does not establish final firmware behavior, electrical hot-plug safety, backwards compatibility, host-specific behavior, completed testing, or a full SAOv3 implementation.

Compatibility: Firefly Jar SAO (DEF CON 34)

Source

maker-described core hardware surface official maker product description

Seven reverse-mounted LEDs, ATtiny824, and UPDI claim

The listing names seven orange reverse-mounted LEDs, an ATtiny824, and reprogramming with a separately obtained UPDI adapter. It does not publish exact LED electrical data, power budget, controller configuration, final firmware, wiring, flashing instructions, or a board-revision test record.

Compatibility: Firefly Jar SAO (DEF CON 34)

Source

maker-described proposed host interface proposal-level compatibility claim

Rare Circuit SAOv3 proposal and lighting-control claim

The maker says the SAO implements Rare Circuit's proposed SAOv3 I2C interface, exposing vendor/product IDs, port and custom-command information, generic LED control, and its own lighting modes. It does not publish a final protocol version, command schema, IDs, host implementation, interoperability result, standard-ratification status, or broad compatibility guarantee.

Compatibility: Firefly Jar SAO (DEF CON 34)

Source

pre-event availability and acquisition record maker marketplace currently marks the listing out

$25 25-sold and zero-remaining DEF CON 34 drop snapshot

The live Lepi Labs product page shows a $25 price, 25 sold, zero remaining, and a DEF CON 34 drop label. The team separately announces scheduled BadgeLife Village drops. These time-specific states do not prove final run size, paid-order ledger, physical stock, exact drop allocation, handoff, delivery, or post-event outcome.

Compatibility: Firefly Jar SAO (DEF CON 34)

Source

Operational history

Issues & Camp Impact

SAOv3, I2C, host-compatibility, ARP, and hot-plug boundary note

The listing frames SAOv3 as Rare Circuit's proposal over I2C, says the device does not support ARP or hot plugging, and describes general host control capabilities. It does not publish an authoritative final standard, electrical I2C details, command schema, host test matrix, version negotiation, port-detection result, hot-plug safety evidence, ARP alternative, backwards-compatibility policy, or proof that a particular badge implements the interface.

The record does not promote a proposal into a universal standard, treat an advertised feature family as cross-host compatibility, or imply safe hot plugging or ARP support.

Confidence: maker product page
Status: proposal-level interface with explicit unsupported features
Timeframe: 2026 pre-event source pass
Source note: Firefly Jar SAO product page.

firmware, vendor-command, secret-content, and licensing gap note

The source mentions lighting modes, generic LED control, vendor commands, reprogramming, and an undisclosed possible secret, but no reviewed material publishes firmware, source tree, binary, command definitions, IDs, secret content, build/flash instructions, update/recovery path, software license, dependency inventory, or terms for user content.

The catalogue records public behavior claims without exposing or inventing challenge content, protocol messages, source availability, update steps, or reuse rights.

Confidence: official product-level behavior description
Status: no public technical release identified
Timeframe: 2026 pre-event source pass
Source note: Firefly Jar SAO product page and Lepi Labs DC34 announcement.

independent DEF CON association and credential boundary note

Lepi Labs identifies a DEF CON 34 drop and BadgeLife Village plans but does not say the Firefly Jar is issued by DEF CON, included with registration, grants admission, replaces a Human badge, has organizer endorsement, or has confirmed venue authorization.

The catalogue classifies the Firefly Jar as an independent pre-event BadgeLife artifact associated with DEF CON 34, not an official credential, organizer-issued badge, or access item.

Confidence: maker product and announcement
Status: independent Lepi Labs SAO with a planned DC34 drop
Timeframe: 2026 pre-event source pass
Source note: Firefly Jar SAO product page and Lepi Labs DC34 announcement.

missing rights-cleared image note

No Firefly Jar SAO image is published because the Lepi Labs product and announcement do not pair a selected factual artifact image with a reusable license or explicit permission basis, attribution, source URL, and processing notes.

The record remains source-backed and image-free rather than copying the maker listing image, prototype/renders, Reddit media, screenshots, social posts, placeholders, or generated approximations.

Confidence: local project policy
Status: needs selected, attributable, cleared original
Timeframe: current catalogue build
Source note: badge.gallery image policy and reviewed Lepi Labs sources.

pre-event drop, production, and fulfillment boundary note

The marketplace is currently out with 25 sold and no remaining units, and Lepi Labs announces scheduled drops. These source states do not establish final manufacture, exact drop allocation, payment completion, physical stock, handoff, shipment, delivery, refund, replacement, or post-event support outcome.

The catalogue preserves a real current offer without claiming a completed DEF CON distribution or fulfilled collector population.

Confidence: first-party product and first-hand maker announcement
Status: listing is sold out; event/drop outcome unconfirmed
Timeframe: as reviewed 2026-08-04
Source note: Firefly Jar SAO product page and Lepi Labs DC34 announcement.

Resources

Firefly Jar SAO first-party Lepi Labs product listing · Lepi Labs' live Uberflux page names the DEF CON 34 drop, current $25 / 25-sold / zero-remaining state, seven-LED/ATtiny824/UPDI claims, Rare Circuit SAOv3-proposal behavior, vendor commands, v1.0 changes, and the explicit ARP/hot-plug non-support statement. Its product image has no stated reusable license or explicit permission basis. Three SAOs of ours coming to DC34 first-hand Lepi Labs announcement · First-person Lepi Labs announcement naming the Firefly Jar's rippling light animation, proposed SAOv3 implementation, possible secret, and planned Friday/Saturday BadgeLife Village drops. Reddit media is not a reusable image grant.

Sources

Lepi Labs: Three SAOs of ours coming to DC34 Retrieved 2026-05-15 · First-hand maker announcement corroborating the named Firefly Jar, rippling light animation, proposed SAOv3 interface framing, secret tease, DEF CON 34 association, and scheduled BadgeLife Village drops. It is not a protocol specification, host test matrix, source release, delivery report, or image license. Lepi Labs / Uberflux: Firefly Jar SAO Retrieved 2026-05-15 · Primary live maker marketplace source for the current DEF CON 34 drop, $25 / 25-sold / zero-remaining snapshot, seven-LED/ATtiny824/UPDI/vendor-command claims, Rare Circuit SAOv3 proposal framing, generic LED control claim, v1.0 pin changes, and explicit no-ARP/no-hot-plug statement. It does not establish final host interoperability, firmware release, fulfillment, or image reuse permission.