Neoixel Fairy Crown instructions contradictory?

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billkerr
 
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Neoixel Fairy Crown instructions contradictory?

Post by billkerr »

The wiring diagram page https://learn.adafruit.com/neopixel-fai ... ng-diagram
says start from the male end. The diagram shows D1 on the GEMMA connected to the IN of the neopixels. Using a magnifier I can see the word "IN" closer to the male end on the back of the neopixels.

However, the assembly page https://learn.adafruit.com/neopixel-fai ... n/assembly
says cut at the female OUT end and connect to the GEMMA. I'm thinking that the assembly page instructions are incorrect, that I should connect the GEMMA to the male IN end.

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Franklin97355
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by Franklin97355 »

You will connect the in pixel to the D1 pin of the Gemma and send the data to the pixels The second link you posted is a way to salvage the female plug in the output end of the pixels to attempt to allow the gemma and the pixels to plug together without tools when wearing.

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billkerr
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by billkerr »

Thanks for replying franklin. If you read both pages carefully the Wiring Diagram page says connect D1 to the male IN end and the Assembly page says connect D1 to the female OUT end. It says that in words and shows it in pictures. I was hoping that this confusing error would be corrected on the site. If I am missing something important then your response hasn't explained it to me.

wiring diagram: https://learn.adafruit.com/neopixel-fai ... ng-diagram
assembly: https://learn.adafruit.com/neopixel-fai ... n/assembly

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Disciple
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by Disciple »

I'm just another customer who has used a number of NeoPixel strips. Two cents, for what they're worth.

Admittedly, the written directions could be a bit clearer, but it does not say to connect D1 to the OUT end. It says to snip off the tip of the OUT end and repurpose it as a handy plug connector, a ready attachment between the Gemma and the IN end. All NeoPixel strips receive their digital data at the IN end, with the little arrows pointing away, if any. (Connecting at the other end never works. I've tried.)
If you proceed with your project as written, I'd suggest adding something to the severed stump of a tail to protect the exposed end from accidentally short-circuiting. The risk isn't great, but it's what I'd do. Hope this helps.

Hallelujah!
Disciple

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billkerr
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by billkerr »

Thanks Disciple, you have provided me useful information about what to do with the female end.

However, I disagree when you say "but it does not say to connect D1 to the OUT end.."
https://learn.adafruit.com/neopixel-fai ... n/assembly
The first paragraph says find the female OUT end. The second paragraph says cut it. The third paragraph says strip the wires. The fourth paragraph says "The red wire will go to VOUT, the middle wire goes to D1, and the remaining wire goes to G."

These instructions contradict the previous wiring diagram page and ought to be corrected. I can't see any words on the assembly page about ""salvaging" or "repurposing" that franklin and yourself refer to.

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Disciple
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by Disciple »

Yeah, that's where the words could use a bit more clarity.
Tutorial wrote:Separate the three wires on the connector and strip about 1/4" from each one using a pair of wire strippers.
The red/middle/remaining wires to be attached aren't at the end of the NeoPixel strip, but on the snipped-off tail tip. The photos show it. The wires soldered to the Gemma only lead to the little plastic plug. The cut end of the strip itself is left as-is.

I'm all in favor of improving the tutorials with clearer language. I've even contributed one. Just one, and I still wonder if there's a part of it that might confuse readers, even after sweating the details for weeks.

Hope this helps.

Hallelujah!
Disciple

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billkerr
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by billkerr »

Thanks again Disciple, yes, the instructions need improving.

But the black plug type shown in the 3rd photo down https://learn.adafruit.com/neopixel-fai ... n/assembly is on the female OUT end of the neopixel dot strand that I bought from adafruit. Another source of confusion.

And when I cut off the plug at the male IN end there won't be a plug left to go to.

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Disciple
 
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Re: Neoixel Fairy Crown instructions contradictory?

Post by Disciple »

billkerr wrote:And when I cut off the plug at the male IN end there won't be a plug left to go to.
Don't do that, please. That connector should be kept intact. As you observe, it's the female plug that gets snipped off, wire-stripped and soldered to the Gemma. Then the two plugs, one on the Gemma and one on the NeoPixel IN end, can be joined and a proper connection made.
Best of success.

Hallelujah!
Disciple

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