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RPi + Other Software Random blinking of the LED strip with the power off

Discussion in 'Hardware Support' started by ReWiG, 23 May 2018.

  1. ReWiG

    ReWiG New Member

    Messages:
    2
    Hardware:
    RPi3
    I use the APA102 LEDs together with RPI3.
    I collected everything exactly according to the guide on this page https://hyperion-project.org/threads/raspberry-pi-3-mediacenter-hyperion-ambilight-no-soldering.77/

    Everything is working fine for me, no problems.
    But when I turn off the power of the LED tape, then periodically, once in 1-2 minutes, random LEDs on my LED tape start flashing randomly. It is important that Raspberry Pi at this time remains on, 24/7.
    What can I do with this? I do not want to turn off the power of Raspverry Pi, it's enough for me to turn off the power of the LED strip.
     
  2. Akriss

    Akriss Active Member

    Messages:
    355
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    In one setup I just switch off the power to the LED's. I think this is the simplest to implement.

    In another, I have a elaborate setup with Home Assistant (www.home-assistant.io) that controls the LED's side by side with Hyperion. I'm still working on this as it's very complected. And I'm still learning how to use Home Assistant.

    Just some food for thought.
     
  3. ReWiG

    ReWiG New Member

    Messages:
    2
    Hardware:
    RPi3
    My problem arises exactly when the power of the LED strip is off. Perhaps it is fed through CI and DI contacts, but how can I avoid this?
     
  4. Akriss

    Akriss Active Member

    Messages:
    355
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    Don't know. . Sorry I have not come across this.
    I can see how without power, that a data signal could propagate past the first led.