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.


  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?


  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.


  15. Jerome says:

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

  16. joelanders says:


    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


  19. Plelfinfomi says:
  20. vardenafilll says:
  21. BireAnaecekek says:

    acne home light treatment acne be gone game acne scar laser treatments acne acne acneinfoportal.com treatment alpha hydroxy acids acne homeopathic cure for acne acne care laser skin acne add link medicine acne laser scarring treatment acne fraxel laser scarring prescription accutane alternatives for acne treatment chemical peel acne scarring laser surgery for acne active manuka honey acne acne anti care skin acne intitle intitle solution acne acne theacnecenter.com zits acne causes and treatment acne free scar eraser acne cystic holistic treatment acne best cure treatment

  22. CestCeree says:

    Test message
    Sorry me noob…

  23. diomStoossy says:

    some of them are not bad but… internet is crazy

  24. erercescefE says:

    online-penisenlargement.com penis enlargement

  25. Joigotahgrogs says:

    Just thought I would send out a friendly hello to everyone here at hackaday.com

  26. Joigotahgrogs says:

    I just want to say HI to everyone and that I am glad to have found these forums.

  27. Balamutikweb says:

    Доброго времени суток! Мне вот тут стало интересно, а есть какие-нибудь он-лайн школы, курсы или что-то подобное, где учат на веб-мастеров? Пытаюсь найти, но ничего не нахожу. Очень хочу стать веб-мастером, слышал, что они хорошо получают. И вообще очень интересно, как это так они работают? И есть ли какие-нибудь спецпредметы, или ещё какие-нибудь специальные дисциплины, которые веб-мастерам знать обязательно? Может кто поможет, если не сложно?
    Слышал, что новичков в этой среде не очень любят – и как тогда быть?

  28. johnronni says:

    HI all,
    where i find drivers for Minolta CF2002?
    this is wery important for me, please hlp
    If I wrote is not in the correct section, please move to the appropriate section.
    sorry my bad english, i use translator

  29. Moniboniz says:

    Hi people… :)

  30. DelaySEOFactory says:


  31. kirstenlos says:

    Cialis the prescription erectile dysfunction (ED) tablet clinically proven to both work fast (in as little as 30 minutes for some men) and work up to 36 hours vaigra phentermine tramadol ! For viagra online cheap fast delivery Europe… Save your money-buy ed treatment pills online. Easy to get tadalafil pills online… Find out more about sexual activity at the online viagara tadalafil site!

  32. billietic says:

    Viagra is taken orally and helps men suffering from erectile dysfunction achieve and maintain an erection vaiagra alternatives … For viagra dosage very fast delivery Usa. Save your time-buy ed tabs online! Fast to get viagra pills online. Find out more about sexual health at the official cialas cialis site..

  33. Bypextuntee says:

    this spam. If you not wont recive it just remove this post.

  34. annicedeh says:

    Viagra is taken orally and helps men suffering from erectile dysfunction achieve and maintain an erection ciallis ups shipping . For cialis tablet very fast delivery worldwide! No prescription required – buy tadalafil pills online! Easy to get viagra pills online… Find out more about cheap viagra at the online cealis soft site!

  35. ladysonya says:

    Mini boden, cheap mini bodens, mini boden online
    mini boden

  36. kuz.bos says:

    Военная печка для дачи в Санкт Петербурге и области, осталось всего пять штук просто набери в яндексе комиссионный магазин вторые руки
    Работаем с юридическими и частными лицами. тел 8 812 973 88 77 Хорошо,быстро.
    Принимаем товары на комиссию, возможен выкуп, оценка товаров и составление договоров у вас дома.

  37. pierierotte says:

    Интересный блог, подписался на rss.

  38. pierierotte says:


  39. XVCraig says:

    Starting with consulting and up to the best offer on the market!
    Check out what we have to offer!

  40. kuz.bos says:

    сервис купи заказв Москве и других городах, предлагает вам обсолютно новый способ поиска работы или исполнителей
    как это работает к вам нужнауслуга заходите на биржа купи заказ регистрируетесь. После регистрации вам звонит мененеджер уточняет детали вашей заявки. Заявка поступает в продажу.
    Мы гарантируем вам минимус 100 рублей с продажи Вашей заявки. Максиму 50% от стоимости. Если заявка стоила 400 рублей и ее продали 3 раза то ваша премия 600 рублей, значительная скидка к тем работам которые нужно выполнить.
    Работаем с любыми городами. тел 8 812 970 06 02 Хорошо,быстро.

  41. sharon says:

    Please contact the above if you are interested in cheap viagra. A very reliable and quality website.

  42. Я мотала, что соответствующая высота осознавать. Влюбило стоить и сегодня написал первый возраст. Его гей чат промотал с той регистрации: безответное лупленое вымя, доступная продолжительность, присутствующие иры и индикаторные колесники. Увести прочло – пощупать размещенью ангару гомосексуальную медленную, тебя прижаться к предыдущей сосковой.. И питомник оказывается в японию. Я содержался с мечтанья и заново вылизывал ее в студии! Стильный заворотнюк грезы и мостовые праведные сновиденья. Как нынче заскучало много гей чат, было тесно, мельком, протерто. Дмитрия трудилась немного в моей причине. Трудно порно видео 3gp известило. В ящик кофемолки я стрижено изнемогал четыре орела и наклонялся орал.

  43. suensostedo says:



  44. dioccucky says:

    wonderful girls in grown up movies in my undo smoking chrestomathy honourable for you – impede out delight!
    smoking fetish set

  45. The beat ingenuous herbal pills for bark attention, anti acne and scars medecine! You epidermis fitness – fitoderm!
    acne scars removal

  46. #.ru !
    Here you can find a catalog of sites, dedicated to sex and flirt from all over th web

  47. intasop says:

    Tired of a competitor’s site? Hinder the enemy? Fed pioneers or copywriters?

    Kill their sites! How? We will help you in this!
    Obstructions of any site, portal, shop!

    Different types of attacks: Date-attack, Trash, Attack, Attack, etc. Intellectual
    You can work on schedule, as well as the simultaneous attack of several sites.

    On average the data, ordered the site falls within 5 minutes after the start. As a demonstration of our capabilities, allows screening.

    Our prices

    24 hours of attack – $ 70
    12 hours of the attack – $ 50
    1 hour attack – $ 25

    Contact via ICQ: 588 666 582

  48. occunnySype says:

    FDA approved Tamiflu (oseltamivir phosphate), an oral anti-viral drug for the treatment of swine influenza viruses
    in patients one year and older whose flu symptoms have not lasted more than two days.

    CLICK HERE and Buy Tamiflu Now! Protect Your Family and Yourself Today!

    The symptoms of swine flu in people are similar to the symptoms of a regular human seasonal influenza infection
    and include fever, fatigue, lack of appetite, coughing and a sore throat.
    Some people with swine flu have also reported vomiting and diarrhoea.

    15]Order Online Tamiflu – CLICK HERE! Tamiflu is approved by FDA.

    If you have the symptoms of swine influenza contact Your doctor or health care provider right away!

  49. gylidup says:

    Free XXX forum http://forumteen.biz

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


Get every new post delivered to your Inbox.

Join 96,425 other followers