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Some questions on how to wire NeoPixel 144 to arduino
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Some questions on how to wire NeoPixel 144 to arduino

by adajeffd2015 on Thu Dec 17, 2015 7:21 pm

- I purchased a neopixel 144 RGB LED strip: https://www.adafruit.com/products/1506. I want to wire it to my arduino uno. There are 4 wires coming from the outer end of the spool, red, black, white and black. The red and a black are bare, and the white and a black has a black clip on their tip. Without removing the plastic sleeve, how can I know which wires are which? Or do I have to strip the plastic?

- Does this strip already come with the 300-500 ohm resister? Or do I need to add it, and which one is best suited for it?

- Would the suggested capacitor of 1000 6.3V to be installed on the + to - wire the correct type for this product?

- I see small white arrows along the strip. Please confirm, the Data and Clock needs to come from the base of the arrow but the 5V and ground power can come from any end of the strip.

Thanks, Jeff

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Re: Some questions on how to wire NeoPixel 144 to arduino

by adafruit_support_bill on Thu Dec 17, 2015 7:48 pm

Red and black are the +5v and GND from the power supply. White and black are signal and GND from the Arduino.

You should use the recommended resistor and capacitor. The capacitor goes between +5v and GND from the power supply. The capacitor will have a stripe marking the negative side. That shold be connected to GND.

The arrows should point away from the signal connection. +5v and GND can be supplied anywhere (even multiple points) along the strip.

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Re: Some questions on how to wire NeoPixel 144 to arduino

by adajeffd2015 on Mon Jan 11, 2016 3:27 pm

OK I am getting 470 ohm resistors, but would a 1/4 watt 5% tolerance sufficient for Adafruit NeoPixel Digital RGB LED Strip 144 LED - 1m ? (https://www.adafruit.com/products/1506)

Also I am getting the capacitor with 1000µF, 35V. Would this work as well?

The information on this tutorial does not mention these extra numbers.
https://learn.adafruit.com/adafruit-neo ... uide/power

thanks, Jeff

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Re: Some questions on how to wire NeoPixel 144 to arduino

by adafruit_support_bill on Mon Jan 11, 2016 3:33 pm

Both of those components should be perfectly suitable.

The resistor will see negligible current, so the power rating is not important. The capacitor should not see much more than 5v. It is good to have a little headroom for safety, but anything rated for more than about 7v should be fine.

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Please be positive and constructive with your questions and comments.