Voting resources, early voting, and poll worker information - VOTE. ... Adafruit is open and shipping.
0

NeoPixel strip wire question
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

NeoPixel strip wire question

by SJanosik on Fri Jun 26, 2020 8:07 am

Hello! I'm working through the Glue stick sculpture project - love this and can't wait to share with a class. The neopixel Strip is described in the directions as having 3 wires coming out of the connector...but mine has just two. The two outside wires come through the connector but the middle wire does not.

My picture exceeds the file size for attaching or I would send it.

Purchased on invoice # 2299057

TIA for any help you can provide on this most wonderous project.
Sandy

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by dastels on Fri Jun 26, 2020 9:25 am

A picture really would be helpful. You could scale it down to fit. Specifically a clear shot of where the wires connect to the strip, i.e. where the middle wire is missing.

Dave

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by SJanosik on Fri Jun 26, 2020 9:38 am

A picture attached - I hope -thank you
Attachments
IMG_20200626_092446.jpg
IMG_20200626_092446.jpg (869.4 KiB) Viewed 141 times

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by SJanosik on Fri Jun 26, 2020 12:21 pm

The picture above shows 3 wires going in to the connector and just two coming out. The instructions describe connecting three wires to the Circuit Playground Express.

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by dastels on Fri Jun 26, 2020 12:54 pm

That doesn't look familiar. What product is it?

Dave

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by dastels on Fri Jun 26, 2020 12:56 pm

More thoughts:

Where's the strip? Is that the end of it in the upper left? 3 wires go from that to the connector.

Are the other two wires coming out of the connector for connecting power & ground?

Dave

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by SJanosik on Fri Jun 26, 2020 2:39 pm

Hi more pictures here... https://drive.google.com/folderview?id=1FE4u05vCB1_CgSn3w17DihvJBdXo78BN

Two wires power and ground come out of connector but directions call for connecting red to Vout, middle wire to A1 and edge wire to GND at learn.adafruit.com/ glue-stick-archway/assembly-circuit. But there is no middle wire.

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by dastels on Fri Jun 26, 2020 2:56 pm

OK. I see what's goign on.

You have the two ends on the strand connected together. This is not what those connectors are for. One end will be in and the other will be out. That's to chain multiple strands together: the out from one to the in from another.

The three connections on the in connector are what you want to connect to your board. That's IFF you're powering from the board. If you have an external power supply for them only connect the data signal and ground to the board (i.e. middle/data and not-red/ground wires). This is when you use the two wires coming from the connector. Those are power/red and ground/not-red. If you aren't using them for power, put some tape or shrink-wrap over the ense so they don't accidentally short against things.

Dave

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by SJanosik on Fri Jun 26, 2020 3:19 pm

This still does not make sense to me. I'm just following the directions in the guide for the glue stick sculpture.

I need three wires and there are only two.
Am I suppose to cut off the black piece? It doesn't say to.

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by dastels on Fri Jun 26, 2020 3:25 pm

Please reread "The Circuit" section of https://learn.adafruit.com/glue-stick-archway/assembly-circuit, and take a look at the other guide page linked to: https://learn.adafruit.com/dance-reactive-tutu-sparkle-skirt/electronics-assembly for the instructions on connecting the strand to the CircuitPlayground.

Since you will, indeed, be powering the strand via the CircuitPlayground, you will not be using those two wires coming out of one of the connectors.

Dave

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by SJanosik on Sun Jul 12, 2020 7:13 pm

Hi - Got it working! Yay!
Is there any information on what was used on the corners to keep all the layers together? It appears to be a black bolt of some type but the holes are very, very small.

Thank you,
Sandy

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by dastels on Sun Jul 12, 2020 9:53 pm

Looks like nylon M2.5 nuts & bolts: https://www.adafruit.com/product/3299.

Dave

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by SJanosik on Mon Jul 13, 2020 9:27 am

Thank you.

Is the standoff threaded all the way through? or does it require two bolts?

If not threaded all the way through with 1/8" acrylic it looks like it would need:
4 M 2.5 x 6MM bolt
4 M 2.5 x 10MM bolt
4 M 2.5 F-F hex standoff

I've got the first of 3 online classes using this project in a month. I'm doing a sample now to be sure I send the kids the right materials. Thank you for the help. I'm buying for 30 kids. Whew! What was I thinking when I took this on!

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Re: NeoPixel strip wire question

by dastels on Mon Jul 13, 2020 11:46 am

Haha... it's always more work than it looks.

No idea how the nuts/bolts/standoffs are done in that. There's enough in the kit to figure it out.

dastels
 
Posts: 3505
Joined: Tue Oct 20, 2015 3:22 pm

Re: NeoPixel strip wire question

by SJanosik on Mon Jul 13, 2020 12:23 pm

Isn't that the truth! I'm new to the Circuit Express so toss in a learning curve.

Anyway - if my calculations are correct for the sizes needed I'd have to buy 7 of the kits to have enough stand-offs (124) for the 30 kids + sample. $120 :( and a lot of unused bolts. I can't buy the kits.

If it isn't possible for Adafruit to confirm the sizes I'll go with my guess and let you know how it works so future people trying the project know.

Thank you for your help,
Sandy

SJanosik
 
Posts: 10
Joined: Sat May 30, 2020 3:09 pm

Please be positive and constructive with your questions and comments.