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Erriez DS3231 high precision I2C RTC library for Arduino: DS3231 high precision I2C RTC library for Arduino
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GitHub - shreyask21/RTC_Hourly_Chime: Demonstration of Dallas Semiconductor DS3231 real time clock functions such as alarm, Interrupt pin etc.
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Raspberry Pi RTC Tutorial: Using DS1307 and DS3231 RTCs with Raspberry Pi - Latest Open Tech From Seeed
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Amazon.com: AITRIP 6PCS DS3231 Real Time Clock Module RTC Sensor High Precision AT24C32 IIC Timer Alarm Clock for Arduino Raspberry Pi with Coin Battery : Electronics
![GitHub - shreyask21/RTC_Hourly_Chime: Demonstration of Dallas Semiconductor DS3231 real time clock functions such as alarm, Interrupt pin etc. GitHub - shreyask21/RTC_Hourly_Chime: Demonstration of Dallas Semiconductor DS3231 real time clock functions such as alarm, Interrupt pin etc.](https://raw.githubusercontent.com/shreyask21/RTC_Hourly_Chime/master/img/flowchart.png)