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RPi + Other Software WS2801 - RPi 3B+ - Raspbian

Discussion in 'Hardware Support' started by ano302, 10 February 2019.

  1. ano302

    ano302 New Member

    Hi all,

    I try to get hyperion to work on my RPi 3B+ but I can't.
    Actually, it already worked but due to bad sticky tape, my raspberry fell down the tv and was dangeling on the cables.

    After this accident I didnt get it to work anymore. What have I done:
    A) Rewireing all connections
    B) Wire in only 3 LEDs that where leftovers from the installation
    C) Buy a new 1m of LED strip, wire that in.

    Nothing works so far.

    For C) I noticed if i only give the current all LEDs are working. When I add the RPi they stop and only the first 2 LEDs are on but they can't be manipulated (used hypercon and the app for android).

    Next steps were:

    D) Reinstall hyperion
    E) Changing cmdline.txt and config.txt accordingly to Akriss https://hyperion-project.org/threads/ws2801-rpi-3b-no-function.3347/

    Some information about the Voltage
    All relative to GND

    __ __ inputLED1__ inputLED2__ inputLED3
    V+ __ +5V__ __ __ +5V__ __ __ +5V
    Clk __ 0V__ __ __ 0V __ __ __ __ 0V
    D__ +1.2V__ __ __ 0V __ __ __ __ 0V
    Gnd __ 0V__ __ __ 0V__ __ __ __ 0V

    May it be that the GPIO of the RPi got damaged?
    Can I use a different GPIO for testing?

    Thank you

    Attached Files:

    Last edited: 10 February 2019
  2. Akriss

    Akriss Active Member

    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    EDIT: Sorry I'm a little under the weather today. I miss read. And Thought you where using WS281X leds.
    You are not. So the below ( "Yes. Detailed HERE." ) AND ( "SPI pins (pin 19) are the best (IMHO). Use the WS281X-SPI driver in Hypercon".) is wrong. Sorry.

    WS2801 leds need the SPI line. no other pins to use on the PI. =/

    There is a program to test the function of SPI pins HERE.

    Could be. But if it boots, chances are it good.

    Yes. Detailed HERE.

    What pins where you using?

    SPI pins (pin 19) are the best (IMHO). Use the WS281X-SPI driver in Hypercon.

    Hope it of help.
    Last edited: 12 February 2019