DC Entries: Relay board, PONG


I’ve got a couple more design challenge entries for ya. (The first one made the entry deadline, but he had to repost it to another web host – no whining about how it was posted on the 26th)

[Joe]submitted his Parallel port relay board. He’s still working on the software to drive it, but the board looks good. He suggests cutting a parallel cable to make the input. (I’ve done it, it’s a pain) I’ll suggest soldering the inputs directly to a solder style DB25 – or add some edge traces so that a cheap solder style connector can be attached directly to the board.

[Andrew] built and submitted UPONG – Pong on a LED dot matrix display. It reminds me of the pong hat. He’s even put up a video of the game in action.

Comments

  1. propeine says:

    I like the pong game a lot. (First Post)

  2. Jason says:

    How many enteries were there?

  3. akmixdown says:

    Where’s the hack-a-day logo on the parallel port relay board?

  4. yuckymucky says:

    Does the pong board have the hack a day logo on it? Even if it doesn’t I really like it.

  5. Naer Dinsul says:

    @3: The documentation on the site says that the hackaday logo scrolls across the LED matrix on startup.

    I have to agree. That upong is beautiful… I’d hate to have to do that soldering though…

  6. royce says:

    I recently worked on a project with LED matrix displays. In the process of trying to reduce our cost and our pin count we happened upon the A6821 and the MIC5891. These are gangs of source and sink drivers that are controlled serially via shift registers. Further they can be daisy chained so that you can control as many matrices as you want with only three MCU lines as long as you can squirt the serial data out fast enough.

  7. kcbanner says:

    @#6 refer to #4 for your answer.

  8. Crossed says:

    Ohh i like the pong game. could be cool with a building guide for it and the chip firmware released, so it’s like an open source sff pong game. only thing missing is a “cpu player” (ie. if your alone then you can play agains the chip itself), an onoff swicth and a battery pack (maybe li ion)

  9. akmixdown says:

    no, the scrolling logo is for the upong game. I’m talking about the relay board contest submission.

  10. morcheeba says:

    The pong game looks neat – nice job, andrew!

    Then again, I’ve got a soft spot for pong — click on my name or watch the video: http://youtube.com/watch?v=EdPAzvWQBCI
    I didn’t submit my design to hackaday because the board is really small & the parts are hard to solder. That, and I didn’t finish until Jan 1st :-)

  11. john says:

    pong game is neat. looks like it would be tough to put together though if that is the idea.

  12. neg says:

    i LOVE the upong board!

    How are you deciding the winner? public vote?

    –neg

  13. Dok says:

    if you look close you can see the logo on the back of the board directly left of the buzzer.

  14. joe says:

    if you go to the site, the hackaday logo can be found on the bitmap version of the parallel pcb. im still new with eagle, so i had to add it into the bmp version with photoshop.

    and btw, the software is done, it lets you turn on or off devices connected to your computer via the internet. the page was posted on the 25th, but i edited it to show the new software on the 26th. scroll down, the app and the php script to run the connect method are near the bottom.

    -joe.

  15. Jerome says:

    don’t tell me that the upong project was made in 25 days! I won’t believe you!

  16. joelanders says:

    @morcheeba,

    wow.
    that pong watch looks A+.

    like the stuff on tokyoflash.com

  17. Kai says:

    I really like the parallel port relay – not too new, but really nice on a small card. I agree with Will that there should be a more comfortable way to connect it, like edge traces…

    The Pong board is also nice, it brings back memories…

  18. Kyndal says:

    Nice little Relay board.
    Although Edge connectors would be nice.
    and I am also a big fan of opto isolators
    when interfacing to Parallel ports on pc´s

    /Kyndal

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