neo_pixel_30_not_working

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1885
 
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neo_pixel_30_not_working

Post by 1885 »

I have a neo pixel 30 strip https://www.adafruit.com/products/1376


Using a 1000uF cap 35 vdc and a 330 Ohm resistor,

I have enclose a photo. The LED's do not work at all even if I set the code to 8 LEDs. I have tested my Arduino set up wth the 8 neo-pixel stick.

I did check the end of the LED strip and there is 5vdc making to to the end of the strip.
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Last edited by 1885 on Sun Oct 26, 2014 4:22 pm, edited 1 time in total.

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Re: neo_pixel_30_not_working

Post by adafruit_support_bill »

I don't see any ground connection between the strip and the Arduino.

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Re: neo_pixel_30_not_working

Post by 1885 »

adafruit_support_bill wrote:I don't see any ground connection between the strip and the Arduino.
the neo-pixel strip to arduino is an orange wire to gnd next to pin 13

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Re: neo_pixel_30_not_working

Post by 1885 »

The lights will flash on once if I remove the power supply connected to the adapter.

Do I need to bridge a ground from the arduino ground to the strip ground?

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Re: neo_pixel_30_not_working

Post by Franklin97355 »

You do but I think you have the second black wire (ground) connected so that should take care of it. The wire to the Arduino pins should be 22ga but if you are sure there is a good connection you should be OK with what you have for testing. Are you sure you are connecting to the input end of the strip?

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Re: neo_pixel_30_not_working

Post by 1885 »

franklin97355 wrote:You do but I think you have the second black wire (ground) connected so that should take care of it. The wire to the Arduino pins should be 22ga but if you are sure there is a good connection you should be OK with what you have for testing. Are you sure you are connecting to the input end of the strip?
Ahhhhh

Just noticed the connector. It is connected to the output . The neo-pixel is reversed.
I'll have to swap the connector.

Thanks Franklin are you in Oregon

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Re: neo_pixel_30_not_working

Post by Franklin97355 »

97355 look it up ;)

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Re: neo_pixel_30_not_working

Post by 1885 »

SOLVED. Works epic now. I just surface mount soldered the correct end of the NEO-Pixel and the code worked perfect.
Nice job AdaFruit!

I also got a a bunch of eneloop batteries and I'm running it with batteries on a hat for Halloween.

Grazie!

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