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7400 competition entry: Moving dot running light

Posted on Thursday, September 8th, 2011 in 7400 contest by Ian

Here’s an entry in the Open 7400 Logic competitionMoving dot running light

Here’s my entry for the “Open 7400 Logic Competition”.  Logic ICs are for timing, and nothing demonstrates timing better than LEDs, and Red-Green LEDs are frosting on the cake.

Check out the video after the break.

This entry was posted on Thursday, September 8th, 2011 at 7:41 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.

2 Responses to “7400 competition entry: Moving dot running light”

  1. octal says:

    Tought it was mandatory to stick with non cmos 74xx series … I can see we can use any 40xx CMOS equiv :)

  2. Drone says:

    I saw this circuit before. It was hooked to a hard disk activity LED so when the disk was active the LEDs would go around and around.

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