In SX Microcontrollers, SX/B Compiler and SX-Key Tool, tdg8934 wrote:

Roy,

You will not need to use a DS1307 or DS1302 with the current circuit. [url=http://forums.parallax.com/forums/default.aspx?m=398272&f=7&p=1#m398340]http://forums.parallax.com/forums/default.aspx?m=398272&f=7&p=1#m398340[/url]

You can have variables for start secs, mins, hrs, days and variables for end secs, mins, hrs and days.

Do some math on them to find out the amount of secs, mins, hrs and days there are between them and just count down that much time till you get to 0 secs, 0 mins, 0 hrs and 0 days. It is a count down timer that is relative in time and not specific to a current time to reference. Does this make sense?

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