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RPi + Other Software White is not White?

Discussion in 'Hardware Support' started by Erwin, 3 October 2018.

  1. Erwin

    Erwin New Member

    Messages:
    3
    Hardware:
    RPi3
    Hello together,
    i have an RPi 3 here and Apa102 Led Strings. In the White Level Settings i can clearly see, that not all 4 of the stripes has the same white. I show you a picture so you can see by our own.
    The Stripe in the bottom and the left one seem to be "Normal" the other 2 are "red-ish"/"yellow-ish".
    Do you know how it comes? Any Idea?
    My stripe starts in the bottem left.

    IMG_20181003_214844.jpg


    IMG_20181003_213426.jpg

    best thanks for your ideas
    Erwin
     
  2. nach00

    nach00 New Member

    Messages:
    18
    Hardware:
    RPi1/Zero, RPi2, RPi3, +Arduino, +PhilipsHue
    You'll never get a perfect white with RGB strips. You need RGBW strips to get the perfect color match that you're referring to.
     
  3. Erwin

    Erwin New Member

    Messages:
    3
    Hardware:
    RPi3
    Yeah i know, but i just wondering why 2 of them seems to be very ok and the other 2 are diffrent in its white appearance.
     
  4. nach00

    nach00 New Member

    Messages:
    18
    Hardware:
    RPi1/Zero, RPi2, RPi3, +Arduino, +PhilipsHue
    I'm thinking it's a connector issue? Maybe try tightening the clips.
     
  5. Akriss

    Akriss Active Member

    Messages:
    378
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    May be voltage drop.

    Powering the led's from each corner can fix that up for you.

    Hope its of help.
     
  6. TPmodding

    TPmodding Administrator Staff Member Administrator

    Messages:
    942
    Hardware:
    RPi1/Zero, RPi2, RPi3, +Arduino, +nodeMCU/ESP8266
    yes, should be a mix of all named hints, non-rgbw and voltage drop...
     
  7. Erwin

    Erwin New Member

    Messages:
    3
    Hardware:
    RPi3
    Ok thank you, i will try to power the led from each corner, now im thinking about how. Thank you for hints