It would be fair to say that Adafruit Industries has already done a great job of documenting their DS1307 Real Time Clock Kit. In fact, their instructions are far better than anything I have to offer as it includes all sorts of files, code, bells and whistles. Nonetheless, since I document everything I make - for redundancy's sake - here is how to assemble a DS1307 RTC Kit.
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Signing UpStep 1The Parts
Your kit should come with:
(x1) circuit board
(x1) DS1307 RTC DIP chip
(x2) 2.2K resistors
(x1) 0.1 uF capacitor
(x1) 32.768 KHz crystal
(x1) battery holder
(x1) headers
(x1) CR1220 battery
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I WOULD BE GRATEFUL IF YOU WOULD TELL US HOW SET THE TIME.
CONNECT TO THE MAIN CLOCK IS EASY, I THINK.
THANK YOU