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7400 competition entry: Pen holder

Posted on Friday, September 16th, 2011 in 7400 contest by SQKYbeaver

Here is an interesting, but unusual entry: Pen holder

I will admit that this may be an unusual project to enter, however as far as I can tell, it does not actually break any rules. It is a functional device in which the circuit (board) is mostly 7400 logic chips.

It appears that it will run indefinitely without needing to change the battries. We love it when we see peoples geek out on display.

This entry was posted on Friday, September 16th, 2011 at 2:01 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.

11 Responses to “7400 competition entry: Pen holder”

  1. arakis says:

    well with cheap fpgas, and MCU they ‘the 7400s’ are starting to feel like electron tubes of old, so this might not be soch a bad use for them.:D.

  2. tinito says:

    Ah! Up to now, this is my favorite entry! ;)

  3. Flavor says:

    Yeah, I like this one a lot.

  4. Eric says:

    Funny and original!

  5. tinito says:

    I also love it has been tagged “low power”

  6. Flavor says:

    Also, I wonder if we’ll see several “copycat” entries, now.

  7. straub says:

    Can you post a schematic?

  8. Shashank Patil says:

    nice artistronics work

  9. irfan says:

    i want buy this itom nd ur company is this possible for me

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