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NeoPixel power distance?
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NeoPixel power distance?

by doublejosh on Fri May 17, 2013 9:05 am

The description on the NeoPixel description mentions that more than 6" of power distance would result in a drop of power. :?
http://www.adafruit.com/products/1312

I'm looking create a very long strand (170 ft) with lights spaced at 6 ft apart. Is this possible?

Did find this note about using a 'blind pixel'...
https://www.adafruit.com/forums/viewtop ... 47&t=39530
Last edited by doublejosh on Fri May 17, 2013 10:52 am, edited 1 time in total.

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Re: NeoPixel power distance?

by adafruit_support_rick on Fri May 17, 2013 10:41 am

The power isn't really the problem - you just use a bigger power-supply. You'll be needing at least 2A. The problem is going to be data corruption. Digital signals degrade over long wire runs due to electromagnetic interference, the impedance and capacitance of the wire itself, reflections, etc.

You can mitigate some of that by using heavier-gauge wire. Sometimes, with this sort of thing, you just have to try it and see what happens.

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Re: NeoPixel power distance?

by doublejosh on Thu May 08, 2014 3:45 am

Worth mentioning that I was able to drive 25 RGB LEDs with 6 ft of phone cord (and later ethernet cable) between each bulb. Also got confirmed all the way to 200 ft with one bulb during testing.

https://www.youtube.com/watch?v=yLMrVE0isjI

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Re: NeoPixel power distance?

by adafruit_support_rick on Thu May 08, 2014 2:35 pm

Wow! Good data point. Thanks!

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Re: NeoPixel power distance?

by doublejosh on Fri Nov 27, 2015 4:40 pm


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Re: NeoPixel power distance?

by adafruit_support_rick on Sat Nov 28, 2015 9:15 am

That's amazing. Didn't think they'd work like that.

The balloons are beautiful!

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Please be positive and constructive with your questions and comments.