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7400 competition entry: Animated LED Christmas sign

Posted on Tuesday, October 11th, 2011 in 7400 contest by DP

Raj entered his Animated LED Christmas sign into the Open 7400 Logic Competition. Having already build a PIC controlled version, he wanted to try and control the sign using discrete logic only. The individual letters are build from red LEDs and run of a 32V power supply. Check out the video of this project below.

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This entry was posted on Tuesday, October 11th, 2011 at 12:00 pm and is filed under 7400 contest. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

3 Responses to “7400 competition entry: Animated LED Christmas sign”

  1. Shashank Patil says:
    October 15, 2011 at 7:09 pm

    n1

    Reply
  2. irfan says:
    January 7, 2012 at 3:50 pm

    strike so butful

    Reply
  3. frank says:
    June 5, 2014 at 12:46 pm

    Please can u send me the circuit diagram [ agbotafrank@yahoo.com]

    Reply

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