Hacker Con Badges

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Seven-Segment Display

Badge records tagged with Seven-Segment Display, across United States.

3 badge(s) · 2026

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DEF CON 34 · United States · 2026

DC-34 Countdown to Singularity Badge

Public KiCad/Arduino DEF CON 34 project; production and distribution unverified

eggsactly's public `DC-34-Countdown-To-Singularity` repository explicitly calls itself KiCad 6 design files for a DEF CON badge that lets users display an estimate for when the AI singularity will occur. Its README names eight seven-segment displays, a real-time clock, front buttons for changing the estimate, a KiCad board tree, an Arduino firmware tree, and a BOM that includes an ATmega328P-PU, PCF8523T, seven 2×3 SAO connectors, three buttons, 9 V input/battery parts, and display/power components. This is a real, independently documented pre-event source project, not proof of an assembled run, a specific final unit, DEF CON authorization, allocation, sale, delivery, credential function, or a rights-cleared image.

DEF CON DEF CON 34 United States Las Vegas Pre-event Independent Badge Electronic Badge KiCad Arduino ATmega328P Seven-Segment Display Real-Time Clock SAO 9V North America

JawnCon 0x3 · United States · 2026

JawnCon 0x3 Calculator Badge

ATmega328P calculator kit badge with DTMF tones, hidden games, a badge-to-badge link, and an in-event firmware fix

The JawnCon 0x3 badge, documented on JawnCon's official badge page ahead of the October 16-18, 2026 conference at Arcadia University. The JawnCon0x3 Badge is a four-digit, seven-segment calculator kit built around an ATmega328P-P with a 16-key keypad. Every key plays a touch-tone (DTMF) pair, typed codes unlock hidden games, a USB-serial menu renames the badge and shows high scores, and a wired serial link lets two badges introduce themselves and count links. A 20-pin edge connector lets attendees plug in their own hardware. The page has attendees assemble the kit at the JawnCon soldering station. During the conference the official homepage said this year's badge had sold out and published a fixed firmware image, with a reprogrammer in the Chillout space. Kit counts and how many attendees received one are not published.

JawnCon United States Pennsylvania Philadelphia Glenside Electronic Badge Kit Badge Firmware Update ATmega328P Seven-Segment Display Calculator DTMF Edge Connector Retro Technology North America No Image

DEF CON 34 · United States · 2026

The Beer SAO / BCCC Temperature Badge (DEF CON 34)

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.

The Beer SAO BCCC Temperature SAO Beer Chilling Contraption Contest DEF CON 34 United States Las Vegas Pre-event RP2350A DS18B20 Seven-Segment Display USB-C SAO Simple Add-On Temperature Sensor Open Source BadgeLife Independent Badge North America