Neopixel 5m 30/m rgbw Strip DoA

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awakebyjava
 
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Neopixel 5m 30/m rgbw Strip DoA

Post by awakebyjava »

I have a 5m strip of neopixels that does not light up. I have verified that the arduino, a second arduino, and the code work on a rgb strip of neopixels I already had. The test code works fine for my old strip, i get the RGB chase as expected.

On the new 5m strip, I do not get the chase. I have changed "NEO_GRB" to "NEO_RGBW" as per the library entry. I get 5V on the arduino header, and also read 5v on the output end of the strip. (I am not confusing the ends of the strip.)

I will post the ardunio code below.

Code: Select all

// Simple NeoPixel test.  Lights just a few pixels at a time so a
// long strip can safely be powered from Arduino 5V pin.  Arduino
// may nonetheless hiccup when LEDs are first connected and not
// accept code.  So upload code first, unplug USB, connect pixels
// to GND FIRST, then +5V and digital pin 6, then re-plug USB.
// A working strip will show a few pixels moving down the line,
// cycling between red, green and blue.  If you get no response,
// might be connected to wrong end of strip -- look for the data
// direction arrows printed on the strip.

#include <Adafruit_NeoPixel.h>

#define PIN    6
#define N_LEDS 150// 5 meter reel @ 30 LEDs/m

Adafruit_NeoPixel strip = Adafruit_NeoPixel(N_LEDS, PIN, NEO_RGBW + NEO_KHZ800);

void setup() {
  strip.begin();
}

void loop() {
  chase(0xFF0000); // Red
  chase(0x00FF00); // Green
  chase(0x0000FF); // Blue
}

static void chase(uint32_t c) {
  for(uint16_t i=0; i<strip.numPixels()+4; i++) {
      strip.setPixelColor(i  , c); // Draw new pixel
      strip.setPixelColor(i-4, 0); // Erase pixel a few steps back
      strip.show();
      delay(25);
  }
}

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awakebyjava
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by awakebyjava »

Here are pictures of both strips connected to the arduino.
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adafruit_support_carter
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by adafruit_support_carter »

Are you getting no output at all? Or partial output?

Are these connections soldered?
solder.jpg
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awakebyjava
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by awakebyjava »

Yes, the + and - DC connections are soldered. The input and gnd for the input are using pinned patch wires.

I am getting no output at all.

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adafruit_support_carter
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by adafruit_support_carter »

OK. Double check wiring again to make sure everything is solid. Then try running this test sketch and see if you can get just the first pixel to light up:

Code: Select all

#include <Adafruit_NeoPixel.h>

#define PIN    6
#define N_LEDS 1

Adafruit_NeoPixel strip = Adafruit_NeoPixel(N_LEDS, PIN, NEO_RGBW + NEO_KHZ800);

void setup() {
  strip.begin();
}

void loop() {
  strip.fill(0xFFFFFFFF);
  strip.show();
}
Also try pressing down on the first pixel and see if that does anything.

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awakebyjava
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by awakebyjava »

No dice. Also including a test that the code is working with the strip I know works.
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E8D37CDB-42E9-4067-8A6A-B785FEF3BF34.jpeg
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adafruit_support_carter
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by adafruit_support_carter »

Bummer. Thanks for trying. OK, just to check, have you tried completely different wires here? And seems like you're getting good contact where circled?
wires.jpg
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awakebyjava
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by awakebyjava »

Yes, those connections are good, I've checked from the exposed pin connector on the strip to the end of the patch wire.

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adafruit_support_carter
 
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Re: Neopixel 5m 30/m rgbw Strip DoA

Post by adafruit_support_carter »

OK, let's just replace it.

Send an email to [email protected] with a link to this thread and your order number and they can send you a replacement NeoPixel strip.

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