DEF CON 34 · United States · 2026

Volatile Organic Canary SAO (DEF CON 34)

Sold-out pre-event Lepi Labs novelty VOC-indicator Simple Add-On for DEF CON 34

Lepi Labs' own Uberflux listing identifies the Volatile Organic Canary as a DEF CON 34-drop Simple Add-On. Its August 4, 2026 marketplace state is out of stock, with 11 sold, zero remaining, and a $45 listed price. The product describes an SGP40 VOC sensor plus SHT4x temperature/humidity sensor, a two-character fourteen-segment display, RGB LED, ATtiny1616-S controller, UPDI reprogramming, SAO or included CR2032 power, and a lanyard clip. Its maker explicitly says the device is novelty-only and must not be relied on for accurate air-quality measurements; it also records a ten-minute VOC-index warmup and a v1.0 board-order/remediation plan. Lepi Labs' first-hand DC34 announcement corroborates planned Friday and Saturday BadgeLife Village drops. This is a source-backed pre-event independent sensor SAO, not proof of final manufactured hardware, sold orders, safe or accurate air-quality measurement, delivery, host compatibility, DEF CON organizer affiliation, conference admission, or reusable-image rights.

EventDEF CON 34
SeriesDEF CON
LocationLVCC West Hall, Las Vegas, Nevada
CountryUnited States

People

Authors & Credits

source-named canary artwork credit

AlfaFilly

The Lepi Labs product page says Canary artwork by AlfaFilly. 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 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

This is unusually explicit current maker evidence for a sensor-bearing SAO, including an essential non-medical/non-safety accuracy boundary that catalogues often lose when repeating product copy. The record preserves its distinct display, sensor, firmware, battery, and I2C-isolation claims while keeping the practical limits visible: a playful VOC indication is not an air-quality instrument, a current sold-out counter is not a fulfillment ledger, and marketplace art is not a cleared documentary image.

Hardware

The maker lists an SGP40 I2C VOC sensor and SHT4x I2C temperature/humidity sensor, a two-character fourteen-segment display controlled by shift registers, RGB LED, ATtiny1616-S MCU, SAO-connector power or an included CR2032 battery, and a lanyard clip. It says v1.0 disconnects hardware I2C from the SAO connector and uses separate connector lines to reduce sensor-bus collisions. No reviewed source identifies sensor calibration or placement, component variants beyond the named families, display/LED part numbers, battery holder/protection, electrical limits, power budget, mechanical dimensions, schematic, BOM, PCB/Gerbers, final v1.0 test data, connector/pinout, supported host matrix, safety certification, or a universal compatibility guarantee.

Software & Apps

The listing says the sensor can show a raw reading or a VOC-index algorithm reflecting relative changes, and says the RGB LED is driven with timers rather than hardware PWM. It also says the ATtiny is reprogrammable through a separately obtained UPDI adapter. No reviewed source publishes the installed firmware, source tree, binary, VOC algorithm version or configuration, sensor library/dependency list, build or flash instructions, update/recovery path, software license, test data, or final behavior of its listed modes.

Lore

Lepi Labs presents the canary as a playful soldering-skills-village companion rather than a protective device. Its DC34 announcement says the group planned scheduled BadgeLife Village drops at Friday 12:30 PM and Saturday 2:30 PM, while the product page names DEF CON 34 drops and says v1.0 boards were ordered. The maker says that unresolved prototype issues or later pre-event problems could lead to a refund or shipment after DEF CON. Those are planned independent acquisition and remediation terms, not proof of actual drop, stock, shipping, refund, event authorization, DEF CON affiliation, or admission.

Source-backed hardware metadata

Technical Profile

Structured technical signals seeded from public badge documentation, repositories, schematics, firmware notes, or event evidence. These fields are designed for filtering, API use, repair planning, preservation, and future Companion Gear matching.

Firmware

  • Arduino documented

    Lepi Labs' public DC34 Canary repository contains a PlatformIO Arduino source tree matching the maker-described Canary components. The product page does not map a branch or build to a delivered unit, and the source is not a supported or safe configuration, update, or operating procedure.

    Signal source

Lifecycle

Add-ons & Upgrades

maker-described core hardware and reprogramming surface official maker product description

ATtiny1616-S display, RGB, and UPDI claim

The listing names an ATtiny1616-S, two-character fourteen-segment display driven through shift registers, RGB LED, timer-based non-hardware-PWM behavior, and reprogramming through a separate UPDI adapter. It does not publish final firmware, exact parts/configuration, code, flashing instructions, electrical design, display/LED behavior contract, or support policy.

Compatibility: Volatile Organic Canary SAO (DEF CON 34)

Source
maker-described measurement behavior explicitly non-accuracy-certified novelty use

SGP40 and SHT4x novelty VOC-indication claim

The maker lists SGP40 VOC and SHT4x temperature/humidity sensors, a raw-reading option, and a relative VOC-index algorithm with an approximately ten-minute warmup. It expressly says no accuracy claims are made and the device must not be relied on for accurate air-quality measurements. The source does not publish calibration, environmental test, threshold, exposure, health, safety, or certification evidence.

Compatibility: Volatile Organic Canary SAO (DEF CON 34)

Source
maker-described power and compatibility surface v1.0 revision claim

SAO or included CR2032 power and I2C-isolation revision

The maker says the canary can run from the SAO connector or an included CR2032 battery. Its v1.0 note says hardware I2C was disconnected from the SAO connector and separate lines were used to reduce the chance of sensor-bus collisions. It does not identify voltage/current limits, battery runtime, connector pinout, I2C electrical characteristics, multi-device test data, or universal host compatibility.

Compatibility: Volatile Organic Canary SAO (DEF CON 34)

Source
post-publication hardware and firmware source trail public untagged repository; event-unit mapping unresolved

Maker-owned KiCad and PlatformIO source archive

Lepi Labs' repository named 5-dc34-canary-badge contains native KiCad board/schematic material and a PlatformIO Arduino source tree with components matching the source-described Canary. The source is useful technical provenance, but no reviewed maker page links it directly to the sold product, and its release page reports no releases. It is not treated as a final v1.0 event firmware, final board revision, calibration record, safe operating guide, or source license.

Compatibility: Volatile Organic Canary SAO (DEF CON 34) only; product-to-repository and repository-to-physical-unit parity remain unverified.

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

$45 11-sold and zero-remaining DEF CON 34 drop snapshot

The live Lepi Labs product page shows a $45 price, 11 sold, zero remaining, and a DEF CON 34 drop label. The team separately announces scheduled BadgeLife Village drops. These time-specific source states do not prove the final run size, paid-order ledger, physical stock, timing, handoff, delivery, refund, or post-event outcome.

Compatibility: Volatile Organic Canary SAO (DEF CON 34)

Source
pre-event production and remedy plan maker-published before DEF CON

v1.0 board-order and unresolved-prototype remediation statement

The listing says v1.0 boards were ordered and that if v0.1 issues remain or later problems cannot be resolved before DEF CON, buyers could receive a full refund or have their SAO shipped after the event. This is a contingency statement, not evidence that any issue was resolved, a final revision shipped, a refund occurred, or a delivery obligation was completed.

Compatibility: Volatile Organic Canary SAO (DEF CON 34)

Source

Operational history

Issues & Camp Impact

VOC measurement, air-quality, and safety boundary note

The maker expressly says no claims are made to this device's accuracy and that it must not be relied on for accurate air-quality measurements. It also frames its VOC-index behavior as relative change after warmup. The source does not publish calibration, environmental or chemical cross-sensitivity testing, threshold or exposure guidance, health recommendations, alarm validation, sensor maintenance, certification, or suitability for safety decisions.

The entry does not treat a playful indication or a sensor part number as an air-quality monitor, medical/safety device, exposure warning, or replacement for appropriate ventilation and professional guidance.

Confidence
explicit first-party product disclaimer
Status
novelty use only; no accuracy claim
Timeframe
2026 pre-event source pass
Source note
Volatile Organic Canary SAO product page.
firmware, VOC algorithm, release, and licensing boundary note

The maker-owned 5-dc34-canary-badge repository contains a PlatformIO Arduino source tree matching the Canary's components and public behavior outline, but reviewed product material does not directly link a commit or branch to the sold SAO. Its public release page reports no releases, and no root license file was recovered. The sources do not establish a final installed firmware, source-to-unit mapping, pinned dependency state, algorithm/library version, calibration state, binary provenance, update/recovery policy, safe operating procedure, or support commitment.

The catalogue can cite the public source archive without presenting it as a finalized event release, validated VOC algorithm, supported update path, secure deployment, operating instruction, or a code/artwork/media reuse grant.

Confidence
maker product description, maker-owned source archive, and public release page
Status
source tree public; no release, license, or event-unit mapping recovered
Timeframe
source refresh reviewed 2026-08-05
Source note
Volatile Organic Canary SAO product page; lepi-labs/5-dc34-canary-badge source tree and public releases page.
hardware, battery, SAO, and I2C compatibility gap note

Lepi Labs' matching public repository now exposes native KiCad board and schematic files alongside the maker's broad sensor, display, MCU, SAO, CR2032, and I2C-isolation statements. Its product page does not link a repository revision to v1.0 or an event unit, and reviewed sources still do not establish a final BOM, fabrication output, battery/power budget, voltage/current limits, pinout, I2C pullup/level details, thermal or runtime data, host matrix, mechanical specification, safety documentation, or final test evidence.

The record can link a source-published design trail while withholding a final physical specification, safe battery-use claim, collision-free bus guarantee, or universal SAO compatibility assertion.

Confidence
maker product description plus maker-owned KiCad source
Status
source schematic/PCB public; final unit and host testing unresolved
Timeframe
source refresh reviewed 2026-08-05
Source note
Volatile Organic Canary SAO product page and lepi-labs/5-dc34-canary-badge KiCad tree.
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 canary 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 canary 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
Volatile Organic Canary SAO product page and Lepi Labs DC34 announcement.
missing rights-cleared image note

No Volatile Organic Canary 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, rendered revision imagery, 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, remediation, and fulfillment boundary note

The marketplace is currently out with 11 sold and no remaining units, and Lepi Labs announces scheduled drops. The listing also states a possible pre-event refund or after-event-shipping remedy if prototype issues persist. None of that proves final manufacture, allocated stock, exact drop quantity, payment completion, defect resolution, receipt, refund, shipping, delivery, or support outcome.

The catalogue preserves current offer and remediation language without converting it into a completed DEF CON distribution report.

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
Volatile Organic Canary SAO product page and Lepi Labs DC34 announcement.

Resources

Sources