How To Control NeoPixel Using Arduino

by | Apr 4, 2023 | Arduino, Basic Coding, Coding

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Introduction of the Project

Today, we are going to connect a NeoPixel with Arduino Uno. NeoPixel is Adafruit’s brand of individually addressable RGB LED lights that can be programmed to create various lighting effects. Arduino is an open-source microcontroller board that can be used to control these LEDs and create custom lighting patterns. NeoPixels offer a wide range of applications, from simple decorations to complex lighting installations, and controlling them using an Arduino board is relatively simple. This article will provide an informative guide on how to control NeoPixel using Arduino, including the necessary hardware and software components and step-by-step instructions to get started.

Whether you are a beginner or an experienced Arduino user, this guide will help you learn how to use NeoPixel with Arduino and create stunning lighting effects for your projects.


In order to control NeoPixel using Arduino, we will require the following components:


Circuit Diagram

Steps To Control NeoPixel Using Arduino

Step 1: Gather all the components on the Physical Table or a Digital Board.


Step 2: Connect the Input pin of NeoPixel to the 2-number pin of the Arduino.

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

Step 4: Connect the Power pin of NeoPixel to the 5V power supply of the Arduino.

Source Code

#include <Adafruit_NeoPixel.h>
#define PIN 2
#define NUM_LEDS 1
Adafruit_NeoPixel demo = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);
void setup()
void loop()
demo.setPixelColor(0, 255, 0, 0);;

demo.setPixelColor(0, 0, 255, 0);;

demo.setPixelColor(0, 0, 0, 255);;

demo.setPixelColor(0, 255, 0, 255);;

Explanation of the Code

1. In the beginning, we included NeoPixel Library.

2. After that, we initialized two variables to the pin number to which the NeoPixel is connected to the Arduino and the number of LEDs that the Neo pixel has.

3. Next, we have passed the parameters, first is the total number of LEDs in the Neopixel, the second is the pin number of the Arduino to which the Neopixel is connected, and the third one represents the Green, Red, and Blue color code along with the frequency of 800KHz of the NeoPixel.

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

5. In the loop function, we set the Pixel color using the color codes, which have values between 0 and 255. After that, we use the show function to show the color and the delay function to delay the color in the Neopixel in milliseconds.


Neopixel With Arduino

As you can see in the output, we will be able to see different colors in the NeoPixel, as we have programmed.


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