Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The TROOPERS19 badge exposed a 3.3 V I2C Shitty Addon interface so the badge could wear its own small add-on boards.
Badge context
Context for the badge add-on interface referenced in the TROOPERS19 writeup.
Official TROOPERS19 event page.
Fuccs Shitty Addon repository linked from the TROOPERS19 badge hardware post.
ERNW/Insinuator post by Jeff about the badge hardware, production, and add-on work.
Open KiCad schematic, layout, gerbers, and assembly-data repository linked from the hardware post.
Source trail
Source repository for the Fuccs Shitty Addon.
Primary design-file repository for the TROOPERS19 badge.
Primary source for hardware specs, design history, add-on context, and production caveats.
Official event context.