DS1302、40NTD（約150円）と格安なのはいいのですが、どうも誤差が大きくて一日で十秒以上もずれてしまいます。およその時間を取得するにはいいですが、 みたいなことをやったところ、誤差が大きすぎて、かなり「残念！」な時計になってしまいました。

Notifications You must be signed in to change notification settings Clock with alarm built using Ardiuno Uno and built in old pigeon clock with an Arduino, breadboard, RTC module DS3231, LCD display ...

Dejan Nedelkovski has built a stylish DIY touchscreen Arduino music player and alarm clock which has been created using a folded piece of sheet metal to provide a minimalist yet clean enclosure to ...

ESP32-C3 automatic plant watering system using capacitive moisture sensor and DS3231 real-time clock. Logs watering history to Google Sheets document. Configurable and firmware upgradable via ...