Add-on dossier

Grove I2C and SAO expansion

A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.

HackerHotel 2019 Badge historical

hardware expansion

HackerHotel 2019 added Grove I2C and SAO connectors on top of the SHA2017-derived base hardware.

Badge context

Related Resources

official docs

Badge.Team page documenting SHA2017-derived hardware, new features, audio-jack issue, and team.

Source trail

Badge.Team · retrieved 2026-05-15

Badge.Team page documenting SHA2017-derived hardware, new features, audio-jack issue, and team.