DEF CON 34 · United States · 2026
Pre-event RP2350 temperature-measuring Simple Add-On for DEF CON 34's BCCC
The live maker listing for The Beer SAO, the public `aerospace-venoms/BCCC_Temperature_SAO` source tree, and BCCC's own DEF CON 34 page document an independent temperature-measuring Simple Add-On associated with the Beer Chilling Contraption Contest. The marketplace's August 4, 2026 payload shows a $45, 150-unit presale with 28 sold and 122 remaining, two BadgeLife Village pickup slots, and no shipping. It describes a roughly 100 mm beer-cup SAO with a waterproof temperature probe, triple seven-segment display, RP2350 with 2 MB flash, USB-C, and a supplied 180-degree adapter for the upside-down DC34 host ports. The source tree identifies an RP2350A, W25Q16 flash, DS18B20 temperature sensor, RGB-independent brightness control, Pico-SDK firmware, KiCad design files, a versioned UF2, and batch programming/soak-test tooling; it says BCCC winners receive copies while stock lasts. This is a source-backed pre-event independent badge record, not proof of final manufacture, pickup, contest results, host compatibility, temperature accuracy, safety, final firmware, DEF CON organizer endorsement, conference admission, or reusable-image rights.
People
The repository's root license identifies copyright by Ames Evans. This is a narrow source/project credit and does not by itself prove marketplace-account identity, final production responsibility, BCCC organizational role, or event affiliation.
SourceThe live Uberflux product payload identifies `bud-lightbeer` as the maker for The Beer SAO. This preserves the marketplace-publisher credit without inferring a legal identity, technical authorship, manufacturing responsibility, BCCC role, DEF CON affiliation, or image-reuse authority.
SourceThis record captures a rare current DEF CON 34 Simple Add-On with a named contest context, live availability, and a substantive public firmware/hardware trail. It can distinguish a concrete RP2350 temperature tool from a generic novelty item while retaining the boundaries that matter: a marketplace counter is not a delivery ledger, a design repository is not proof every event unit matches it, a 180-degree adapter does not certify compatibility with all hosts, and a permissive code license plus product pictures does not clear a factual badge image—especially where the source itself discloses AI-derived artwork.
The marketplace calls the unit a roughly 100 mm by 100 mm beer-cup SAO with a waterproof temperature sensor on an approximately 200–250 mm lead, a triple seven-segment display, rear brightness button, USB-C programming/power, RP2350 with 2 MB flash, and an included 180-degree DEF CON 34 SAO adapter. The public source tree specifies an RP2350A QFN-60, W25Q16 2 MB flash, DS18B20 one-wire sensor on GPIO 16, three common-anode seven-segment displays driven through a 74HC595, RUN/BOOTSEL/brightness buttons, USB-C serial/debug, and a three-pin SWD header. It says the non-power SAO pins are routed to the RP2350 and describes 3.0 V tolerance, but does not publish a final event-unit revision, complete electrical budget, voltage/current limits, connector/pinout validation, host matrix, probe ingress rating, calibration procedure, accuracy/error data, thermal data, battery/power safety analysis, compliance evidence, or final assembly/quality-control record.
The public firmware uses the Raspberry Pi Pico SDK across both RP2350 cores: one reads the DS18B20 about once per second and updates the display buffer, while the other multiplexes the three digits at about 333 Hz. The source says a missing sensor produces a display fallback and logs the die temperature over USB serial; hardware revision 1.3 or later uses the brightness button to cycle four levels. It documents a `thermometer-v1.1.0.uf2` image, USB BOOTSEL flashing, a Python batch flash-and-test tool, and soak-log/report tooling. The repository's license is WTFPL v2, but its source trail does not establish the exact firmware/PCB revision loaded into every marketplace unit, a support or update policy, dependencies' licensing, test coverage beyond described tools, a release integrity hash, or a warranty that the measurements or host behavior are suitable for a particular use.
BCCC's own 2026 page places its twenty-first Beer Chilling Contraption Contest at DEF CON 34 in the Las Vegas Convention Center on August 6–9 and says contestants must have DEF CON badges. The Beer SAO listing offers independent BadgeLife Village pickup rather than an admission credential, while the repository says BCCC winners receive copies while supplies last. Those sources establish a contest-linked BadgeLife artifact and two announced acquisition paths, not a BCCC- or DEF CON-issued Human badge, universal contestant distribution, contest award result, badge entitlement, organizer sales authorization, or event access.
Lifecycle
The repository says winners of the 2026 Beverage Chilling Contraption Contest receive copies while stock lasts, and BCCC's official page locates the contest at DEF CON 34. This does not prove award recipients, winner quantity, qualification rules beyond the contest page, stock allocation, event outcome, or that the marketplace presale and winner copies are the same final unit run.
SourceThe marketplace describes a roughly 100 mm beer-cup SAO with a waterproof temperature sensor on an approximately 200 mm lead and an included 180-degree adapter for DEF CON 34's upside-down host ports. The source does not provide final board outline, connector mechanical drawing, probe ingress/sanitation rating, adapter circuit/pinout, force/strain limits, physical compatibility matrix, or confirmation that all units use the same parts.
SourceThe observed live product payload reports $45, 150 total units, 28 sold, 122 remaining, `presale: true`, no shipping options, and two announced DEF CON 34 BadgeLife Village pickups: Friday August 7 at 1 PM and Saturday August 8 at 1 PM. This is a time-specific maker marketplace snapshot, not proof of paid-order count, completed manufacture, venue authorization, onsite inventory, pickup, delivery, refund, support, or final availability.
SourceThe source tree documents a versioned `thermometer-v1.1.0.uf2`, USB BOOTSEL flashing, `flash_and_test.py` serial verification, and soak-log/report scripts for batch programming. Those tools demonstrate a public intended workflow, not a signed release, independently audited production test, all-unit pass record, final factory process, repair policy, or guaranteed recovery path.
SourceThe repository says core 0 samples DS18B20 temperature about every second and updates the display buffer, while core 1 multiplexes three digits at about 333 Hz; revision 1.3 or later cycles four brightness levels. It does not establish the exact binary deployed to every sold unit, final timing/accuracy under load, error handling, field behavior, update cadence, or supported configuration matrix.
SourceThe repository specifies an RP2350A QFN-60, W25Q16 2 MB flash, USB-C for programming and serial debug, RUN/BOOTSEL/brightness buttons, and a three-pin SWD header. The marketplace adds 3.0 V tolerance and says non-power SAO pins are routed to the RP2350. These sources do not establish a final board revision, voltage/current budget, level shifting, overload protection, SAO standard conformance, electrical testing, or universal host compatibility.
SourceThe source tree names a DS18B20 one-wire sensor on GPIO 16 and three common-anode seven-segment displays multiplexed through a 74HC595, while the listing describes a waterproof probe and triple display. The firmware source says a missing DS18B20 produces a display fallback and logs die temperature to USB serial. No reviewed source provides temperature calibration, traceability, environmental limits, response time, error bounds, food-contact certification, or a suitable-use guarantee.
SourceOperational history
The record links the public workflow without representing it as a final reproducible, supported, audited, or universally deployed firmware release.
No board art, product imagery, source preview, or derivative is treated as a rights-cleared factual hero image merely because the code/design source is public or broadly licensed.
The dossier does not turn an open technical design into an accuracy guarantee, safe-use endorsement, electrical compatibility certificate, or universally compatible host accessory.
The catalogue classifies the artifact as an independent contest-linked Simple Add-On rather than an official conference credential, access substitute, or confirmed universal contest prize.
The record remains source-backed and image-free rather than copying marketplace photos, repository previews, contest media, screenshots, social posts, placeholders, or generated approximations.
The catalogue preserves announced independent acquisition paths without converting a live counter or contest promise into a confirmed completed distribution.