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180 feet adressable led
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180 feet adressable led

by zburhop on Mon Nov 13, 2017 1:27 pm

Hi,
I've done a lot of searching and cant find what I am looking for so I thought I would ask. I need to control 6 30 foot lengths of addressable neopixel leds. Each of the lengths will do the same animation. I understand powering them so in reality each 30 foot length will technically be in two pieces but it will need to act as one for animation sake. Does anyone know anything about this or can link to a project that does this? Its important that each length of 30 feet has the same color animation as the others.

Thanks a bunch!,
Zach
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Re: 180 feet adressable led

by adafruit_support_bill on Mon Nov 13, 2017 1:36 pm

You can control all 6 with the same signal. With Neopixels, a fanout of 2 or 3 from a single pin is generally workable if the signal runs are not too long. For more than that, you may need additional buffering. A 74AHC125 would work well for that.

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Re: 180 feet adressable led

by zburhop on Mon Nov 13, 2017 3:09 pm

Cool! Can the signal from the Arduino reliably run down 30 feet of strip? It would be easiest for me to place the Arduino at one end and connect pins to the others.

Thanks again,
Zach
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Re: 180 feet adressable led

by adafruit_support_bill on Mon Nov 13, 2017 3:36 pm

Each pixel acts as a signal repeater for the next pixel on the strip. There should not be a problem repeating the signal down 30 feet of pixels. The most critical connection is from the Arduino to the first pixel.

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Re: 180 feet adressable led

by franklin97355 on Mon Nov 13, 2017 8:26 pm

You don't say how many pixels per foot. That may have a limit on which Arduinos you could use for control.

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