1. New to Christmas lighting? Get started with the AusChristmasLighting 101 Manual:
    auschristmaslighting.com/wiki/AusChristmasLighting-101

Answered Help debugging new pixel icicle string

Discussion in '101 Display Basics' started by Kjax, Aug 12, 2019.

  1. Kjax

    Kjax New Elf

    Joined:
    Jul 15, 2019
    Messages:
    11
    Likes Received:
    1
    I received my first shipment of lights and am having issues with one of the strings. Hoping someone can sanity check to make sure I'm not doing anything obviously stupid.

    The string of lights is this one: (WS2811 icicles from ray wu)
    https://www.aliexpress.com/item/32310871722.html?spm=a2g0s.9042311.0.0.2b474c4dUY3cyQ

    The icicle string has an xconnect connector, and I've got an xconnect pigtail connected to my F4V3 board.
    I've verified the pigtail is correctly connected (it powers one of the non-icicle strings just fine, and it matches the wiring diagram ray sent me)
    [​IMG]

    When I plug in the string, some of the LEDs flash red briefly, so it seems to not be completed dead. But nothing lights up when I run any of the test sequences.

    Is there anything else I can test? or settings I can mess with? Thanks in advance!
     
  2. uncledan

    uncledan Full Time Elf Generous Elf

    Joined:
    Dec 27, 2014
    Messages:
    195
    Likes Received:
    164
    Location:
    Buellton California
    If the port on the Falcon and the pigtail work on other strings I can assume one of the following is the issue. 1) bad first pixel 2) bad pigtail on the pixel string 3)Wiring is different on the pigtail on the icicles then the other pixel string that worked 4) Wrong voltage (verify the pixels are labeled 12v on the PCB) I would probably start by cutting off the pigtail and connecting the string directly to the port on the Falcon. You should be able to trace the wires back to the first pixel to verify which wire is which. The pixel should be labeled 12v, D and GND
     
    Kjax likes this.
  3. OP
    OP
    Kjax

    Kjax New Elf

    Joined:
    Jul 15, 2019
    Messages:
    11
    Likes Received:
    1
    Thanks! I tried all of these - the solution seems to have been a bad pixel somewhere in the first icicle. I'll just have 1 fewer icicles than planned. Thank you!!
     

Share This Page