Issue dossier
Rob Rehrig's first-hand writeup documents the 0xC badge theme, laser-tag behavior, enclosure, optics, and production decisions, but this pass did not recover a public schematic, Gerber set, BOM, firmware repository, binary archive, or full badge manual.
A linkable camp-impact record with badge context, severity, evidence confidence, and source notes.
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source-depth caveat · source-backed but incomplete · needs deeper archive recovery
The catalogue records verified event, game, mechanical, and optical facts without claiming that the complete design archive is public.
- Badge
- THOTCON 0xC Badge
- Category
- source-depth caveat
- Severity
- note
- Confidence
- source-backed but incomplete
- Status
- needs deeper archive recovery
- Timeframe
- current THOTCON 0xC pass
- Source note
- Rob Rehrig THOTCON 0xC writeup, official THOTCON 0xC schedule, Fourfold work page, and InfoconDB event metadata.
event metadata
InfoconDB source for THOTCON 0xC dates, May 19-20, 2023, unknown-location framing, and official con-page link.
Badge: THOTCON 0xC Badge
first-hand project writeup
Rob Rehrig source for the Contra theme, conference-wide laser-tag concept, custom housing design, clear polycarbonate production decision, IR receiver/emitter layout, TIR lens work, Xometry manufacturing path, and roughly 2,000-badge scale.
Badge: THOTCON 0xC Badge
maker portfolio
Fourfold source identifying the THOTCON 0xC badge as a full-assembly/manufacturing project from bare PCB to polished conference-electronics product.
Badge: THOTCON 0xC Badge
official event schedule
Official THOTCON archive source for May 19-20, 2023 Chicago dates, badge/swag check-in, and badge-required party entry at Ravenswood Event Center.
Badge: THOTCON 0xC Badge
Fourfold · retrieved 2026-05-15
Maker portfolio source for the 0xC badge's full assembly, manufacturing, protective-enclosure, and conference-electronics production framing.
Badge: THOTCON 0xC Badge
InfoconDB · retrieved 2026-05-15
Event metadata source for May 19-20, 2023 dates and unknown-location context.
Badge: THOTCON 0xC Badge
Rob Rehrig · retrieved 2026-05-15
First-hand badge-team source for the Contra theme, laser-tag function, enclosure and lens design, injection-molding decisions, Xometry production path, and physical-layout evidence.
Badge: THOTCON 0xC Badge
THOTCON · retrieved 2026-05-15
Official event source for the May 19-20, 2023 Chicago edition, badge pickup, and party-entry badge requirement.
Badge: THOTCON 0xC Badge