This is high precision real time clock by Adafruit based on the DS3231 IC made by Maxim Integrated. The datasheet of the DS3231 describe it as Extremely Accurate I2C-Integrated RTC\/TCXO\/Crystal and \u201cit does exactly what it says on the tin! This Real Time Clock (RTC) is the most precise you can get in a small, low power package\u201d as claimed by Adafruit.\u00a0 \u00a0 without battery\u00a0
\nThe reason for the high accuracy of this real time clock is explained as follows : \u201cMost RTCs use an external 32kHz timing crystal that is used to keep time with low current draw. And that’s all well and good, but those crystals have slight drift, particularly when the temperature changes (the temperature changes the oscillation frequency very very very slightly but it does add up!) The crystal of this RTC (DS3231) is inside the chip! And right next to the integrated crystal is a temperature sensor. That sensor compensates for the frequency changes by adding or removing clock ticks so that the timekeeping stays on schedule\u201d.\u00a0
\nThis is the finest RTC you can get, and now we have it in a compact, breadboard-friendly breakout. With a coin cell plugged into the back, you can get years of precision timekeeping, even when main power is lost. Great for datalogging and clocks, or anything where you need to really know the time.\u00a0
\nSpecifications<\/p>\n
Complete the clock calendar function including the second, minute, time, week, date, month, and year
\n+ 2.3 V to + 5.5 V power supply voltage
\n– 40 \u2103 to + 85\u2103 temperature range
\nLow power consumption<\/p>\n
\u00a0
\nDS3231\u00a0 Datasheet.
\nDetailed tutorial from\u00a0Adafruit including arduino connection and code\u00a0
\nDetailed tutorial from\u00a0 including arduino connection and code in pdf format.<\/p>","protected":false},"excerpt":{"rendered":"
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