Creation of Bar-Graph Clock from Scratch. HELP!

Discussion in 'The Projects Forum' started by Always?, Mar 17, 2011.

  1. Always?

    Thread Starter New Member

    Mar 17, 2011
    I am a high school student making a digital clock with a bar graph display from scratch. I can easily find clock microchips online (the best I have found yet is at, but how do I link this to a bar graph display? What circuit can I make to make a row of LEDS light up off of a clock output, one after the other?

    Please clarify excessively for me.

  2. beenthere

    Retired Moderator

    Apr 20, 2004
    The short answer is that you can't without a microprocessor in between to run the 3 wire serial interface. Grab the data sheet - use ds1302 as a search term.

    If you want to make a clock using a bar graph display, you might find that CD4017 decade counters will work nicely. It's easy to find digital clock designs.

    Almost forgot this one -
    Last edited: Mar 17, 2011