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RPi + Other Software HD107S leds

Discussion in 'Hardware Support' started by Awawa, 4 November 2020.

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  1. Awawa

    Awawa Active Member

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    RPi1/Zero, RPi3, +nodeMCU/ESP8266
    Did anyone test this new type of leds with Hyperion? On paper there are perfect and because it's a new model there is a chance that Chinese didn't manage to make counterfeit clones of them (like APA102 where almost every APA102 sold on AliExpresses is in fact worse SK9822).
     
  2. TPmodding

    TPmodding Administrator Staff Member Administrator

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  3. Awawa

    Awawa Active Member

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    Compatible with APA102 protocol, speed of 40MHz and PWM = 26kHz looks really impressive. At least on the paper...
    There's also other model HD108 but unfortunately not accessible for sale on Ali.
    Rpi 3.3V fits HD108 logic levels and it's 16bits per color.

    If anyone has trustworthy seller to recommend I could buy it on 11.11 and test it myself (my 2801 needs refresh after three years). This time I'll build a frame because my TV is a little too far from wall and colors of adjacent leds are mixed up.
     
  4. pclin

    pclin Active Member

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    I once had a user with the stripes HD107s in support, see here.

    Unfortunately I can't find the HD107s-RGBW Stripe anywhere, otherwise I would have bought it and tried it out.

    Regards pclin
     
    Last edited: 5 November 2020
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  5. NeeeeB

    NeeeeB Active Member

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    • Like Like x 1
  6. pclin

    pclin Active Member

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  7. TPmodding

    TPmodding Administrator Staff Member Administrator

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    yeah...the datasheet also only says rgb? apa107 are also rgb
     
  8. pclin

    pclin Active Member

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    Schnellstes Chip HD107s, Aktualisierungsvorgang des RGB-/RGBW Pixel-LED von Apa102 mit PWM erneuern Kinetik 27kHz und 40MHz Transsmission Geschwindigkeit.

    from Datasheet:
    The HD107S 5050-RGBW and HD107S led with16bits will on market In October 2019

    Regards pclin
     
  9. Awawa

    Awawa Active Member

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    "HD107S 2020-RGB /HD107S 3535-RGB /HD107S 5050-RGB on the market already.
    The HD107S 5050-RGBW and HD107S led with 16 bits will on market In October2019"

    something gone wrong....
     
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  10. pclin

    pclin Active Member

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  11. Awawa

    Awawa Active Member

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    Yeah, for sure it seems to be better option than other LEDS. Of course HD108 would be better for Rpi. I'm afraid about their reliability. My WS2801 works without any issues for years and I've read many reports about problems with other type of leds, mainly APA102 clones. I've just found direct seller from the manufacturer of HD107S and they have cheap 48led per meter, that's what I was looking for.
     
  12. pclin

    pclin Active Member

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    I tested WS2801. WS2812b, LPD8806, APA102 and SK6812-RGBW-NW.
    1 place SK6812-RGBW-NW
    2 place APA102
    3 place LPD8806 /WS2812b
    5 place WS2801
    Most of them with 60 LED/m

    Regards pclin
     
    Last edited: 5 November 2020
  13. Awawa

    Awawa Active Member

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    Why sk6812? One channel instead of two and very low bandwidth. I my case bandwidth is very important for high FPS grabber and smoothing at least 3xFPS. And account LED per meter. Must to calculate the frames size but I propably need more MHz than 800KHZ.
     
  14. pclin

    pclin Active Member

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    SK6812-RGBW best white, Color calibration is very easy, most consistent values for MCD and there is no speed limit in my testing.

    Luminous intensity(mcd) and working voltage

    SK6812 Datasheet

    Regards pclin
     

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    Last edited: 5 November 2020
  15. pclin

    pclin Active Member

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  16. Awawa

    Awawa Active Member

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    @pclin I saw some users on other forum waiting for them from January, no one can order them ;)

    And for the bandwidth:
    For 55" Oled TV I need ~4m of LEDs.
    Communication frame size: ~ LEDs * 4 bytes

    For 30 led/meter:
    4 * 30 * 4 * 8 +headers => ~3900 bits
    30FPS * 3 smoothing = 90 => 351kHz at ideal condition

    For 30 leds/meter 180 FPS => 700kHz

    For 48 leds/meter 90FPS: 6200 * 90 => 560kHz
    For 48 leds/meter 180FPS => 1.1MHz

    For 60 leds/meter 90FPS: 7680 * 90 => 700kHz
    For 60 leds/meter 180FPS => 1.4MHZ

    But we are not living in the perfect environment. Some video frames could arrive late, there is overhead on internal communication and we need higher bandwidth than that minimum. I think that it's safe to assume 1.5 * that minimum. Almost all of one channels LEDs are unsuitable for most scenarios for me.

    I think that I'll order that HD107..or maybe someone has a link to genuine, not counterfeit, not cloned Taiwanese APA102 as an alternative? ;)
     
    Last edited: 5 November 2020
  17. pclin

    pclin Active Member

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    I'm waiting for the HD108 RGBW with my 268 LED SK6812 RGBW, I'm very satisfied.

    Regards pclin
     
  18. Awawa

    Awawa Active Member

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    Received feedback from the manufacturer from China. HD108 can be ordered but the price is ~50$ per meter :eek:
     
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  19. TPmodding

    TPmodding Administrator Staff Member Administrator

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    thats tooo much.... I would rather buy sk6812rgbnw for ambilight or ws2812b for all other projects
     
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  20. pclin

    pclin Active Member

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    Yes thats tooo much....

    Regards pclin