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---
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name: Adafruit PiRTC
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class: board
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type: RTC
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formfactor: Custom
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manufacturer: Adafruit
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description: Add a simple RTC to your pi
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url: https://learn.adafruit.com/adding-a-real-time-clock-to-raspberry-pi/set-up-and-test-i2c
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buy: https://www.adafruit.com/products/3386
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image: rtc.png
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pincount: 6
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eeprom: no
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power:
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'1':
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ground:
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'6':
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pin:
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'3':
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mode:SDA
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'5':
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mode:SCL
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i2c:
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'0x68':
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name: PCF8523
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device: PCF8523
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-->
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#Adafruit PiRTC
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This is a great battery-backed real time clock (RTC) that allows your Raspberry Pi project to
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keep track of time if the power is lost. Perfect for data-logging, clock-building, time-stamping,
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timers and alarms, etc. Equipped with PCF8523 RTC, it works great with the Raspberry Pi and has native
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kernel support.
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This RTC will keep the time for about 5 years. The PCF8523 is simple and inexpensive but not a high
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precision device. It may lose or gain a second or two per day.
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