Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30 LED

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ANIKET
 
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Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30 LED

Post by ANIKET »

i just bought the neopixel 30 led strip. I connect the white wire (din) to the digital pin of my arduino uno. connect the black wire to the gnd of the arduino and the red and the other black wire to 5v and gnd respectively. I burned the code strandtest from Adafruit_NeoPixel library changing " Adafruit_NeoPixel strip = Adafruit_NeoPixel(30, PIN, NEO_RGB + NEO_KHZ800);". However nothing happens. Also if i just power the led strip to power 5v , random LED in the strip glows up. Please help.

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adafruit_support_bill
 
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Re: Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30

Post by adafruit_support_bill »

Check to make sure you are connecting to the input end of the strip. The input end will be marked 'DI', the output is marked 'DO' and the arrows should point away from the Arduino.

Make sure that you follow the "best practices" when connecting to the strip: http://learn.adafruit.com/adafruit-neop ... -practices

ANIKET
 
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Re: Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30

Post by ANIKET »

i am connecting to the DIN port. And i did refer to the guide, however no success.
- do i have to solder something on the led, i mean do i have to solder the first part to the second and the second part to the third or something or the strip works just right away ?
- Also how do i check whether all my Leds in the strip are working or not without connecting it to the Arduino ?

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Re: Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30

Post by adafruit_support_bill »

It is not possible to test the leds without a microcontroller such as an Arduino to send them commands.

Please post a photo that shows all your connections to the strip.

ANIKET
 
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Re: Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30

Post by ANIKET »

this a pic of the connectors , i'll also upload the pic of the connections that i am making with the power source and the arduino and the output too.
Attachments
photo1.jpg
photo1.jpg (260.06 KiB) Viewed 353 times

ANIKET
 
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Re: Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30

Post by ANIKET »

-- This is the connection to the power source
https://www.dropbox.com/s/6rhlz8yi9w1oq ... 9%20AM.jpg

-- This is the connection to the Arduino
https://www.dropbox.com/s/3bm1ei5s2nahd ... 0%20AM.jpg

-- The Led strip whether connected to the arduino after dumping the code or just connected to the power source glows the red led.
https://www.dropbox.com/s/wnq3iny2bs5pj ... 4%20AM.jpg

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Re: Adafruit NeoPixel Digital RGB LED Weatherproof Strip 30

Post by adafruit_support_bill »

Connections look right - except there is no capacitor or resistor as recommended in the best practices page: http://learn.adafruit.com/adafruit-neop ... -practices

Bench power supplies similar to the one you are using have been known to produce brief but damaging spikes on power up. In most cases, the damage is limited to the first pixel. You can try connecting your signal wire to the input of the next pixel in the strip to see if this is the case.

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