Hi Jellis,
Do you have a crystal with a capacitance load of 6pf? If not, the clock won't be very accurate.
Yea it is kind hard to see if the RTC is working without a display. I have a serial LCD that I plug into my clock boards. The clocks run without the LCD but I only plug it in when I'm checking the times and testing the clock. I built a test program into it that lets me change the alarm times to one and two minutes from the current times and at the completion of the test it restores the alarm times to their normal settings and reboots the system. I've had 80 of them in service for almost 3 years now.
I just tried to get a picture of the board to send to you but the limits were exceded. If you send me your email address I'll send you a picture.
BobK
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