Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The badge used a flexible substrate PCB with ATmega328P control, accelerometer input, USB serial, CR2032 power, and 32 LEDs driven through shift-register logic.
Badge context
Block diagram source for ATmega328P/Arduino Mini core, LIS3DH accelerometer, FT231X USB serial bridge, 32 LEDs, 74HC595 LED driver, FPC edge connector, MCP1700 regulator, and CR2032 power.
Schematic source for USB, MCU, accelerometer, LED matrix, FPC, SAO-related wiring, battery, regulator, and CC BY 4.0 distribution statement.
Official Grand Idea Studio project-page WebP used as the local rights-cleared badge image under the project page's CC BY 4.0 design-license statement.
Grand Idea Studio project page documenting the first official international DEFCON badge, flexible PCB, tree game, USB, accelerometer, CR2032 power, 3,300-unit production, role variants, CC BY 4.0 design license, and documentation links.
Joe Grand slide deck for concept, prototyping, manufacturing, and production challenges behind the badge.
Talk record documenting the May 31, 2019 Creating the DEFCON China 1.0 Badge presentation and Joe Grand presenter credit.
Workshop slide source for attendee hacking paths around the flexible PCB badge and support hardware.
Source trail
Primary slide source for badge concept, prototyping, manufacturing, and production-process context.
Primary source for first-official-international-DEFCON claim, flexible-substrate PCB, tree-lighting game, USB, accelerometer, CR2032 power, 3,300 badges, role variants, CC BY 4.0 design license, and documentation set.
Primary hardware source for ATmega328P/Arduino Mini, LIS3DH, FT231X, 32 LEDs, 74HC595 LED driver, FPC edge connector, MCP1700 regulator, and coin-cell power architecture.
Primary schematic source for component-level wiring and CC BY 4.0 design-file distribution.
Image-provenance source for the official DEFCON China 1.0 badge photo published on the Grand Idea Studio project page; the page states that all designs are distributed under Creative Commons Attribution 4.0 International.
Talk metadata source for presentation date, first DEFCON China event context, and Joe Grand presenter attribution.