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Thread: Hopefully This Is Easier to Fix

  1. #61
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    Default Re: Hopefully This Is Easier to Fix

    Well today is a very disappointing day. A board member sent me a know working Raspberry Pi and a Ron' Pi Matrix board.
    Guess what the problems still exist.
    Lets see what I have tested.

    • changed ribbon cables
    • changed ribbon cables to diferent rows of panels
    • different Pi
    • different Pi matrix board
    • tried many different matrix sizes
    • a single P10 panel performs correctly - no text problems - but not if more panels are used
    • connected all the grounds together on the PS
    • grounded the PI and output board to the PS


    I am really at a loss. I am really wondering if somehow its the panels themselves.

    All thoughts and suggestions welcomed - I should have been an easy project

  2. #62
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    Default Re: Hopefully This Is Easier to Fix

    I wonder if the scan rate is wrong on the panels. Where are you located I can send you some panels to see if it's your panels

    Sent from my SM-G955U using Tapatalk

  3. #63
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    Default Re: Hopefully This Is Easier to Fix

    i could send you a couple of my spare panels and you can try them with your setup to see if they work. As long as you send them back. I got mine from Ray Wu and work fine.

  4. #64
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    Jan 2015
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    Default Re: Hopefully This Is Easier to Fix

    Quote Originally Posted by covewi View Post
    Well today is a very disappointing day. A board member sent me a know working Raspberry Pi and a Ron' Pi Matrix board.
    Guess what the problems still exist.
    Lets see what I have tested.

    • changed ribbon cables
    • changed ribbon cables to diferent rows of panels
    • different Pi
    • different Pi matrix board
    • tried many different matrix sizes
    • a single P10 panel performs correctly - no text problems - but not if more panels are used
    • connected all the grounds together on the PS
    • grounded the PI and output board to the PS


    I am really at a loss. I am really wondering if somehow its the panels themselves.

    All thoughts and suggestions welcomed - I should have been an easy project
    Tucsonlights seems to have a great offer to nail down the P10 are the issue, but it may be only a couple panels with bad outputs.
    Good Luck
    In Lights Therapy...

  5. #65
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    Default Re: Hopefully This Is Easier to Fix

    We will see soon. Hopefully the panel swap will solve the mystery.

  6. #66
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    Default Re: Hopefully This Is Easier to Fix

    No further update on testing new panels yet - hopefully this week.
    I believe the problem is the panels outputs somehow. Unless you have other ideas.

    Here is a panel matrix - the text is fine
    1.jpg

    Here is a two panel matrix - the text gets weird about halfway through the first panel and into the second
    2.jpg

    Heres a three panel matrix - the same problem
    3.jpg

    Here is made the second panel of the 3 panel matrix the first panel in a 2 panel matrix - just to show the each panel work fines as a single panel.
    2-1.jpg

    Has anyone else purchased P10 panels in the last group buy and are you having any sorts of panel problems?

  7. #67
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    Default Re: Hopefully This Is Easier to Fix

    Have you tried 3 panels in a row using 3 outputs. Using the 3W X 1H setup

    See Pic for setup
    Co123.JPG
    In Lights Therapy...

  8. #68
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    Oct 2009
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    Default Re: Hopefully This Is Easier to Fix

    That works and shows that all three Pi Matrix board outputs work correctly - even with my output board.
    do I.jpg

    I made a 6 X 1 matrix ( 2 panels on each output) and again the second half of the first panel and the entire 2nd panel on each output has the problem.
    Ian only showing the last 2 panels of output three so I could get close enough for a good photo.
    2.jpg

    Its the boards! Resolution?

  9. #69
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    Default Re: Hopefully This Is Easier to Fix

    Yes, I think we are one step closer to prove the P10 panel output has issues.
    In Lights Therapy...

  10. #70
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    Oct 2009
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    Default Re: Hopefully This Is Easier to Fix

    Another board member came up with a post from the xLights Facebook page. I don't have Facebook but it dealt with P10 panels having flickering problems and they determined it was a voltage issue.

    It appears they turned the PS voltage down to 4.3 V and running the FPP brightness at 100% got rid of the problem. Others talked about voltages run at 4.7 and never at 5.0.

    I tried changing the voltages from 5V to 4.5 and 4.3 - the lowest the PS it will output. I also turned the FPP brightness all the way up to 100%.
    The panels still flicker, there are extra pixels that cause the ghosting effect and at those voltages / brightness the text is almost not viewable.

    I should have a few borrowed panels later this week to run a comparison. Its very strange when 2 or more panels are connected the second half of the first panel and all the other panels run funky.
    Last edited by covewi; 08-16-2017 at 09:56 AM.

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