Board not Displaying anything

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  • March 4, 2015 at 7:14 am #755
    uditrana
    Member

    I really liked what you did with the board and this whole concept. I took your schematic and swapped out some parts for ones that I already had and took out some of the extra things. The schematics should be almost exactly the same though. Yet I ordered my board and built it and nothing is outputting to the displays. The code is uploading fine and it should work but I get no response on a display. Any idea why this may be the case?

    Here is a link to by board and schematic files if those are important
    http://1drv.ms/1wHC2xp

    March 4, 2015 at 1:43 pm #2200
    Michael
    Keymaster

    Your link to board and schematic is broken.
    Why did you substitute parts and “take out some of the extra things”???

    March 5, 2015 at 12:28 am #2201
    uditrana
    Member

    Sorry here is a new link
    https://www.dropbox.com/sh/yb639hioeg1kbar/AAD3nsnFITyl-WWMZRtyrbYea?dl=0

    Well mainly to use the parts I already had. Nothing too major.
    Changes:
    Different Buttons
    Different Crystal (3 pin vs 2 pin)
    Different RCA Jack(3 pin vs 2 pin)
    Different Programmer (using a AVR Pocket Programmer)
    added a VGA Jack
    No diodes
    Removed all the headers for the accessories (mainly because we weren’t going to use them)

    The idea was making this even tinier and cheaper and using parts that we already had bulk of. But the schematic should really not have changed aside from the diodes on the RCA connector, which shouldn’t be essential considering the TV Out schematic doesn’t use them.

    March 5, 2015 at 4:17 am #2204
    Michael
    Keymaster

    So, you are copying my work instead of buying my product, and now you are asking for help in my product support forum?

    March 5, 2015 at 6:19 pm #2207
    uditrana
    Member

    I never really copied your work…

    Yes I used your schematic as a reference but that’s what arduino and open source is about… Your product would not match what we needed anyways because it does not use VGA nor does it support the AVR Pocket Programmer.

    But ok sorry for wasting your time. I thought you might be willing to help out. We have cited you as a reference in all our work, and on our boards.

    March 5, 2015 at 6:22 pm #2208
    uditrana
    Member

    And we are really only using it for Education. Some of our students who used thhttp://nootropicdesign.com/forum/index.phpis have bought your board too.

    March 5, 2015 at 6:29 pm #2209
    Michael
    Keymaster

    You certainly can copy open source boards, but you are asking for help in the product support forum.
    The diodes are needed. They are there for a reason. They keep the current from flowing between the two video output pins.
    The Hackvision cannot output VGA. It generates a composite video signal. Are you trying to create a VGA signal? TVout will not do that.

    March 5, 2015 at 7:39 pm #2210
    uditrana
    Member

    No no no sorry for the confusion. I added VGA to the board (to be used with Nick Gammon’s libraries and work) but I also have composite out on the board that is not working with TV Out. Even with the diodes. That’s OK thought, I’ll figure something out.

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