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12V addressable led strip light

Discussion in '101 Display Basics' started by Wayne Smith, Dec 30, 2017.

  1. Wayne Smith

    Wayne Smith New Elf

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    I recently obtained a 12v addressable led strip light WS2812B Waterproof and for the life of me cant get them working. I have tried two separate 12v power supplies and with the data in (green wire) connected to my raspberry pi 3 as well as arduino uno but yet nothing. I do get a quick flash of some light when Initially plugging into a power supply but that is it. Any suggestions would be helpful 20171230_131808.jpg
     

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  2. AAH

    AAH I love blinky lights :) Community Project Designer Generous Elf

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    You would need both the data and gnd wires connected to the pi and have the 2811 outputs enabled/configured on the Pi. The Pi pumps out 3.3V logic and the pixels use 5V so ideally you should have a level converter of some sort to bring up the logic level. Connecting a 2811 tester is great for testing.
    http://www.hansonelectronics.com.au/product/pixel-tester-2811/

    Below shows part of the 2811 config within FPP
    http://www.hansonelectronics.com.au/wp-content/uploads/2016/05/PI28D-2801and2811.jpg
     
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  3. Goliath

    Goliath Apprentice Elf

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    Others will have to help with the Pi/Arduino bits. I am told that plugging/unplugging 2811 chips to a live power supply is likely to blow chips. Always make sure power is turned off when doing this.
     
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