RTC Shield Kit for Arduino UNO

Add a Real Time Clock (RTC) shield to your Arduino UNO projects to ensure accurate and easy timekeeping. While the shield keeps track of time and date, the controller can focus on other tasks.

• based on Maxim-Dallas DS1307 IC
• counts seconds, minutes, hours, date of month, day of the week, year and leap-year
• 12 or 24h system selectable
• AM/PM indication
• large user community
• requires 1 Arduino UNO (not included)
• stackable design: the shield can be stacked with other shields

• I²C interface
• accuracy: 20ppm (depends on crystal)
• power consumption: 1.5mA
• with backup battery holder (500nA when running on battery)
• dimensions: 68 x 53mm / 2.67" x 2.08"

• Velleman KA07 Datasheet
• Velleman KA07 Assembly Manual (English)
• Velleman KA07 Assembly Manual (Multilingual)

• Velleman KA07 Library Modified to manage the frequency of the flashing LED on the shield, driven from the SQW.