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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。

The project integrates an Arduino with a DHT11 sensor for measuring temperature and humidity, along with an RTC DS3231 module for maintaining real-time clock functionality. The Arduino periodically ...

A man named [Jim Valvano] once said “There are 86,400 seconds in a day. It’s up to you to decide what to do with them.” — while we couldn’t tell you who [Jim Valvano] was without a google search*, his ...