Neo pixel spacing

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cajaka
 
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Neo pixel spacing

Post by cajaka »

I have a lighting project I was thinking of using NeoPixels for. Is it possible to have individual pixels with about 9-12 inches spacing between them.

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adafruit_support_bill
 
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Re: Neo pixel spacing

Post by adafruit_support_bill »

Yes. We sell individual pixels in several forms. You can typically space them out to a couple of feet before you have to start worrying too much about noise or signal loss.
http://www.adafruit.com/products/1558
http://www.adafruit.com/products/1312
http://www.adafruit.com/products/1559
http://www.adafruit.com/products/1260
http://www.adafruit.com/products/1655

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cajaka
 
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Re: Neo pixel spacing

Post by cajaka »

They should work fine then. I was looking into using these, http://www.adafruit.com/products/1559 . Would it be possible to hook the Din of two chains of these off of one pin of the 5v Trinket?

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adafruit_support_bill
 
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Re: Neo pixel spacing

Post by adafruit_support_bill »

Would it be possible to hook the Din of two chains of these off of one pin of the 5v Trinket?
A fan-out of two usually works. You will want to keep the distance from the Trinket to the first pixels fairly short for best results.

danizep
 
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Re: Neo pixel spacing

Post by danizep »

led_wall.jpg
led_wall.jpg (144.97 KiB) Viewed 288 times
adafruit_support_bill wrote:Yes. We sell individual pixels in several forms. You can typically space them out to a couple of feet before you have to start worrying too much about noise or signal loss.
http://www.adafruit.com/products/1558
http://www.adafruit.com/products/1312
http://www.adafruit.com/products/1559
http://www.adafruit.com/products/1260
http://www.adafruit.com/products/1655
Would this work if I used leds cuted from a strip and tape together by ribbon cable?

https://www.adafruit.com/products/1376 or https://www.adafruit.com/products/1461

I want to make a wall of glass bricks with a led each ( centered ).

Since the blocks are about 11 inches wide, I estimate that to be the length between leds.

Is it possible?

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adafruit_support_bill
 
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Re: Neo pixel spacing

Post by adafruit_support_bill »

Yes, that should be possible.

danizep
 
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Re: Neo pixel spacing

Post by danizep »

I'm asking because I read somewhere that: "Using ribbon cable you can string these up to 6" apart (after that, you might get power droops and data corruption). "

Is this related to some older version of NeoPixel?

I will have 128 individual LEDs and was thinking split into 2 groups of 4 groups of 64 or 32.

I need to be sure that it will work because I have a limited budget given by my university... :P

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adafruit_support_bill
 
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Re: Neo pixel spacing

Post by adafruit_support_bill »

It looks like you will have them arranged in a large matrix array. If you run +5v and GND to the start of each row, the voltage drop should not be a problem.

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