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RPi + OpenELEC Blue LEDs no longer work

Discussion in 'Hardware Support' started by rugbert, 7 July 2018.

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  1. rugbert

    rugbert New Member

    Messages:
    10
    Hardware:
    RPi3
    A couple weeks ago I noticed that Hyperion couldnt connect to the LEDs any more ("cannot connect to host" error message) but I was too busy to investigate. Today I turned everything back on and it appeared that things are working again BUT it looks like the blue LEDs no longer work..

    My setup is:

    RP3 with the clock, digital in, and ground connected directly to the LED strip, and power (5v) + ground also connected to the LED strip by means of a 5V10A power supply. My wiring diagram looks like this:

    http://awesomepi.com/wp-content/upl...bilight_ws2801_raspberry_pi_howto_connect.png

    I also have this this switch between the LEDs and the power supply: https://www.amazon.com/gp/product/B077KX7YHH/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1

    Not sure where I need to start looking, but my first instinct is that the power supply maybe damaged the LED strip because when it first stopped working I was able to get it to work again temporarily by jiggling the power cord.
     
  2. penfold42

    penfold42 Moderator Developer

    Messages:
    742
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    Measure the voltage at the led strip.

    Different colour leds have differing forward voltage requirements. Blue being the highest (about 3 ish volts)