NeoPixel Strip 4 With Arduino

by | Apr 6, 2023 | Arduino, Basic Coding, Coding

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Introduction of the Project

Hello Everyone! Welcome to the world of Arduino and NeoPixel! Today we will learn how to connect NeoPixel Strip 4 with Arduino Uno. If you’re looking to add a dazzling display of colorful lights to your Arduino project, you’re in the right place. In this tutorial, we’ll explore how to connect a NeoPixel strip with 4 LEDs (light-emitting diodes) to an Arduino microcontroller and create mesmerizing lighting effects that will captivate your audience.

NeoPixel strips are flexible, addressable LED strips that allow you to control each individual LED to display any color you desire. With their compact size, low power consumption, and stunning brightness, NeoPixels are perfect for adding eye-catching visual effects to a wide range of applications, from costumes and props to home decor and wearable electronics.

In this tutorial, we’ll cover the basics of connecting a NeoPixel strip with 4 LEDs to an Arduino, including the required components, wiring diagrams, and code examples. We’ll walk you through it step-by-step, making it easy for even beginners to get started. So, whether you’re experienced in working with Arduino or a curious beginner, let’s dive in and unlock the world of NeoPixel magic!



In order to build this Arduino Project, we will require the following components. These components can be purchased online, or you can use the TinkerCad website can be used to program them.


Circuit Diagram

Steps To Connect NeoPixel Strip 4 With Arduino

Step 1: Initially, gather all the components required in one place.

NeoPixel Strip 4:

Step 2: Connect the Input pin of the NeoPixel strip 4 to the 5-number pin of the Arduino Uno.

Step 3: Connect the Ground Pin of the NeoPixel strip 4 to the GND pin of the Arduino Uno.

Step 4: Connect the Power pin of the NeoPixel strip 4 to the 5V pin of the Arduino Uno.

Source Code

#include <Adafruit_NeoPixel.h>
#define PIN 5
Adafruit_NeoPixel strip = Adafruit_NeoPixel(4, PIN, NEO_GRB + NEO_KHZ800);
void setup()
void loop()
int c1 = random(0, 255);
int c2 = random(0, 255);
int c3 = random(0, 255);

for(int m = 0; m < 4; m++)
strip.setPixelColor(m, strip.Color(c1, c2, c3));;

if (m == 4)
m = 0;
random(0, 255);

Explanation of the Code

1. At the start, we included a library for the Neopixel Strip.

2. After that, we initialized a variable “PIN” to 5.

3. We are passing three parameters in the object of the library, which include the total Neopixels in the strip, the pin number of Arduino to which the Neo pixel strip is connected, and the frequency along with its color code.

4. In the setup function, we are starting the strip.

5. In the loop function, we have used three variables that will get a random number from 0 to 255.

6. Now, using a for loop, we are setting the pixel color in the strip, and using the show function, we are displaying the colors to each Neo Pixel of the strip.

7. The random function used here will generate a random number wrt the given two arguments in it.


NeoPixel Strip 4 With Arduino - Output

To get an eye-catching look at the strip, switch ON the Arduino, and a mind-blowing look will be in front of you!


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