Categories

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.

Via the contact form.

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:

    n1

  2. irfan says:

    strike so butful

  3. frank says:

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

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Dave B: Got two of them. If you let the battery run flat, they don't charge! You have to pull the battery, and get enough charge in...
  • Bill F: My turn?
  • Chris: Ok!
  • Bob: Free PCB for me!
  • Blars: Yet another meaningless comment.