RPi don't see Arduino?

  • Hello, looks like my rpi3 don't see arduino?
    I have arduino uno connected to rpi,
    have 2812b leds connected to uno (pin 10),
    10A power supply for leds, 3A for RPi.


    After everything started i see only 2 white blinks on leds and that's it...




    I can get screenshot from grabber.


    i've checked usb devices with arduino connected and disconnected, look like it on USB0

    I have no idea what to do else, it just doesnt work :(
    when i'm trying to set color, there are no errors, but nothing changed on leds...


    Please help
    Thanks

  • Is your arduino powered from the usb? Or are you back powering it from the leds?


    If your back powering it that may be the trouble. Separate the led power form the arduino and let the usb power it.


    Hope it helps.

  • I've changed LED_PINS to 6, I've took new led strip (220 leds), I've changed connection wire to pin #6 (uno -> led strip)



    new log:


    at start all leds flashing white, some times red, after that they all shine white, and no reaction to screen change on grabber, and no change on color changing in color picker, always everything white
    Thanks...

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