12mm LED pixels random flickering Moderators: adafruit_support_bill, adafruit

[Twisteduser]

Error:

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  File "/usr/local/lib/python3.5/dist-packages/adafruit_ws2801.py", line 73, in __init__
    self._spi = busio.SPI(clock, MOSI=data)
  File "/home/pi/.local/lib/python3.5/site-packages/busio.py", line 186, in __init__
    self._spi = _SPI(portId)
  File "/home/pi/.local/lib/python3.5/site-packages/adafruit_blinka/microcontroller/generic_linux/spi.py", line 22, in __init__
    self._spi = spi.SPI(device=(portid, 0))
  File "/home/pi/.local/lib/python3.5/site-packages/Adafruit_PureIO/spi.py", line 167, in __init__
    raise IOError("{} does not exist".format(device))
OSError: /dev/spidev0.0 does not exist

[adafruit_support_carter]

Oops. OK, that's an easy fix. Just need to enable SPI on the RPI. You can do that via raspi-config.

[Twisteduser]

Okay, so I reinstalled today my raspberry, and now I'm using this solution and it's definitely better.
I start testing now, I hope there won't be any problem.
Thanks! :)

[borm]

I noticed in one of the pictures that the +5v power for the pixels is attached to the +5v (pin 2) of the Raspberry Pi. I am considering doing this as well, but I am concerned about having 1.4 extra amps going through the pi board.

My power supply is large enough (2.5 amps) but I'm not sure if the pi board itself can handle it. I'm using a pi 0 W. Do you have any advice about whether or not this is a safe way to proceed?