https://www.gizmodo.jp/2022/07/f91w-smatrwatch.html?cx_click=pc_ranking
> 著作権許可制にしてGitLabですべてを公開しています。
著作権許可制… 
ギズモード・ジャパンチプカシがスマートに？ 1989年のカシオ｢F91W｣をスマートウォッチにしてみた
https://mikeshouts.com/f91-kepler-a-casio-f91-smartwatch-reboot/
> Pegor’s Gitlab repository where you can find hardware design files, firmware, and “completely unfinished software” available under a permissive license.
permissive license 
ShoutsSomeone Is In The Process Of Turning A Casio F-91W Digital Watch Into A SmartwatchAt this point, the Casio smartwatch is not new. The company officially join the smartwatch game last year with its first Wear OS-powered device. Though that was hardly the first. The watchmaker first ventured into
