2 layers11.5 × 11.6 mm
ATTinyRTC
pgreenland/attinyrtcmodule
ATTiny85 RTC for Mac SE/30 (and possibly others), using universal serial interface (USI) peripheral
6 parts11MIT
Open-source KiCad boards
1 match “pgreenland”Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.