Real Time Clock DS3231 - Ideal para Raspberry Pi - AutoCore
Se você possui um projeto com a Raspberry em que se faz necessário manter as informações de data e hora atualizadas, ainda que a Raspberry esteja desligada e com baixo consumo de energia, esse módulo era o que você procurava. - AutoCore Robótica Conf
GitHub - skiselev/rpi_rtc_ds3231: Maxim DS3231 Based RTC Module for Raspberry Pi
Seeedstudio DS3231 High Precision RTC Clock Module for Raspberry Pi - RobotShop
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Real Time Clock Module, 4 Pcs Set DS3231 High Precision RTC Clock Module Real Time Memory Module RTC Hwclock for Raspberry Pi with Battery
DS3231 High Accuracy RTC (Real Time Clock) for Raspberry Pi
DS3231 High Accuracy RTC (Real Time Clock) for Raspberry Pi
DS3231 Real Time Clock RTC Module for Raspberry Pi
DS3231 High Accuracy RTC (Real Time Clock) for Raspberry Pi
DS3231 High Accuracy RTC (Real Time Clock) for Raspberry Pi
From the Bench - Raspberry Pi: Adding a DS3231 RTC (Real Time Clock)
DS3231 RTC Module for Raspberry Pi
From the Bench - Raspberry Pi: Adding a DS3231 RTC (Real Time Clock)
Real Time Clock RTC DS3231 para Raspberry Pi - UsinaInfo
Adding a Real Time Clock to Raspberry Pi(DS3231)⋆ EmbeTronicX
Build low-power, clock-controlled devices - Raspberry Pi