7400 competition entry: Animated LED Christmas sign

in 7400 contest by DP | 3 comments

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.

Via the contact form.

This entry was posted in 7400 contest and tagged , , .

Comments

  1. Shashank Patil says:

    n1

  2. irfan says:

    strike so butful

  3. frank says:

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

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