Add-on dossier

SAO and exposed IO pads

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

BornHack 2020 Badge historical

hardware expansion

The unpopulated SAO v1.69bis header and rear IO pads made the LED-matrix badge useful for soldered extensions.

Badge context

Related Resources

source

Hardware branch README covering SAMD21, CircuitPython, LED matrix, IR, buttons, SAO, and exposed pads.

Source trail

BornHack GitHub · retrieved 2026-05-15

Hardware branch README covering SAMD21, CircuitPython, LED matrix, IR, buttons, SAO, and exposed pads.