1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

100 LED Display - Please help, my job depends on it!!

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by leo.j.arnold, Sep 7, 2009.

  1. leo.j.arnold

    leo.j.arnold New Member

    Joined:
    Sep 7, 2009
    Messages:
    13
    Likes:
    0
    Hello everyone,

    As promised here are some pictures of the finished thing. Managed to get it finished in time after a very late night putting it all together on Thursday, amazingly it worked first time and I only had a couple of dodgy soldering joints on the LEDs to fix.

    @MrRB - The PICs weren't supplied by the lecturers, I had to buy them out of the budget for the project, but they're only £1.70 each so not really a massive expense. I went to try and get the code off the lecturers yesterday afternoon but they'd gone home for the weekend so I can't post it!

    @blueroomelectronics - I work for a university, my official job title is 3D visualiser and graphic designer, but I get given a broad range of projects to do.

    Thanks again to everyone for all your advice, I apologise if anyone feels I've not listened to your suggestions but in the end I had to go with the solution of people who were on hand to help, however absurd it may be.

    Let the torrent of criticism begin!
     

    Attached Files:

  2. picbits

    picbits Well-Known Member

    Joined:
    Jan 29, 2007
    Messages:
    2,000
    Likes:
    93
    Location:
    Northants, United Kingdom
    ONLINE
    Looks good :)
     
  3. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,180
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
    hi leo,
    Construction looks A OK.!:)

    Another thing you have learnt Leo, never volunteer.....play hard to get..;)
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. 3v0

    3v0 Coop Build Coordinator Forum Supporter

    Joined:
    Jul 14, 2006
    Messages:
    9,404
    Likes:
    227
    Location:
    OKLAHOMA USA

    It looks good to me too.

    It is done and working, that is the important thing.

    3v0
     
    Last edited: Sep 19, 2009
  6. blueroomelectronics

    blueroomelectronics Well-Known Member

    Joined:
    Jan 21, 2007
    Messages:
    12,536
    Likes:
    168
    Location:
    Toronto, Canada
    Very nice, and speedily done too!
     
  7. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,442
    Likes:
    933
    Location:
    Canada, of course!
    I am glad that you finished it nicely and it works well.
    I notice that the LEDs have a very narrow viewing angle.
     
  8. Boncuk

    Boncuk New Member

    Joined:
    Nov 10, 2007
    Messages:
    5,382
    Likes:
    88
    Location:
    Phetchabun,Thailand
    Hi colin55,

    why not calm down a bit? :)

    I guess we are about the same when it comes to progressive work. I had a studied electronics engineer who messed up a prototype board completely consisting of 80 digital and analog ICs by just using the wrong resistor values. It took me full three days to trace the errors and finally got that thing working as proposed.

    Helping a forum member with an idea or a small circuit shouldn't be a problem. I've made my suggestion for this threat and that "was it". Reading the follow-on posts amuses me, foreseeing what will happen next - and sure enough it does. :)

    Good advices, good schematics, etc. What for? The OP has already changed his mind.

    So what?

    I'm still somewhat choleric (as you are), but with increasing age it deminishes almost, but never totally! :D

    Concerning charge, I guess it's a matter of business. Sometime an expected charge would make posters cautious - and may be think of their own. Anyway, charge won't hurt if you charge. :)

    Be cool :D (part of "co(o)lin")

    Boncuk
     
  9. Boncuk

    Boncuk New Member

    Joined:
    Nov 10, 2007
    Messages:
    5,382
    Likes:
    88
    Location:
    Phetchabun,Thailand
    Congratulations for the well done presentation.

    For how long will it save your job?

    (not a question, but something to think about)

    All the best

    Boncuk
     
  10. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,442
    Likes:
    933
    Location:
    Canada, of course!
    Until the next project comes.
     
  11. MrDEB

    MrDEB Active Member

    Joined:
    Apr 16, 2007
    Messages:
    4,364
    Likes:
    22
    How tall is that SB1 rocket?

    now you need to add a gorilla, a couple of model planes rotating around the top.
    add some excitment.
    when you reach your sales goal then the gorilla falls off.
    nice looking project. still think bargraph leds would have been better.
    now when you can, get a schematic and code.
    we here are all in suspense.
     
  12. Mr RB

    Mr RB Well-Known Member

    Joined:
    Jul 22, 2008
    Messages:
    4,716
    Likes:
    194
    Location:
    Out there
    Haha! I thought it looked a bit "Empire State" until I read the Nottingham conference centre bit down the bottom.

    Looks nice Leo! And congrats on getting it done the way you wanted regardless of people arguing about the best way to do it.

    And as an added bonus you coined your own joke;
    "How many Leo.J.Arnold's does it take to change 100 lightbulbs????
    ...

    One! (and 2 lecturers and 10 PICs)"
     
  13. kpatz

    kpatz New Member

    Joined:
    May 27, 2009
    Messages:
    343
    Likes:
    7
    Location:
    NH
    Nice job!

    PICs are cheap, if the quickest way to a solution is 10 of 'em, I say go for it. If you did it with 1 PIC then you're talking a slew of driver and gate ICs and probably more work than just hooking 10 PICs together.

    They're in sockets, so after the sales target is reached they can be pulled and used in other projects. Or cut up the PIC board and use them in 10 different projects.

    I hope they didn't use 20 MHz crystals for the PICs. Now that would be overkill. Heck, they could have just used the PIC's internal oscillators.
     
    Last edited: Sep 20, 2009

Share This Page