How to use The 8 LED 32mm Ring NeoPixel

The 8 LED 32mm Ring NeoPixel is a version of the NeoPixel series that includes 8 LEDs in a 32mm ring format. In this guide, we will be using the NeoPixel Compatible WS2812 5050 RGB LED (8 LED 32mm Ring) from our store.

Parts

Wiring Guide

NeoPixel	Arduino
5V	5V
GND	GND
DI	Pin 6

Soldering is required to wire everything properly. Use jumper wires to connect the NeoPixel with the Arduino.

Programming

Step 1: Before we start coding, we first have to download the needed libraries.

Step 2: Enter NeoPixel and install the highlighted search.

Step 3: Declare your libraries

#include "Adafruit_NeoPixel.h"

Step 4: Declare an object using Adafruit_NeoPixel.

Adafruit_NeoPixel pixels(8, 6, NEO_GRB + NEO_KHZ800);

Adafruit_NeoPixel pixels(# of LEDS, digital pin #, LED type + LED type);

Step 5: Initialize the NeoPixel project.

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

Now that everything has been initialized, you can code whatever you want.

Example

Here are a few commands you can use to control the NeoPixel:

object.setBrightness(0-255); //sets the brightness of the NeoPixels

object.clear(); //clears all the pixels

object.setPixelColor(pixel#, object.Color(R, G, B)); //sets a color for a specific pixel

The (R, G, B) can go from (0, 0, 0) to (255, 255, 255)

object.show(); //shows whatever pixel you have updated with setPixelColor

Here is an example of how to use the 8 LED 32mm Ring NeoPixel.

Step 1: Initialize the NeoPixel.

#include "Adafruit_NeoPixel.h"
#ifdef __AVR__
    #include <avr/power.h> // this is required for 16 MHz Adafruit Trinket
#endif

int PIN = 6;
int NUMPIXELS = 8;

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup(){
    pixels.begin();
    pixels.setBrightness(10);
}

Note: the NUMPIXELS start as 0 and ends as 7, 0 is located on the LED above the pins and the ascending numbers go clockwise

Step 2: Let's start by clearing the NeoPixel to make sure there is nothing on the LEDs.

void loop(){
    pixels.clear();
}

Step 3: Let's create a for loop that makes one LED light up after the other every second.

for(int i = NUMPIXELS; i >= 0; i--){
    pixels.setPixelColor(i, pixels.Color(255, 0, 255)); //this should make a magenta color
    pixels.show();
    delay(1000); //delays for 1 second
}

Full Code

#include "Adafruit_NeoPixel.h"
#ifdef __AVR__
    #include <avr/power.h> // this is required for 16 MHz Adafruit Trinket
#endif

int PIN = 6;
int NUMPIXELS = 8;

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup(){
    pixels.begin();
    pixels.setBrightness(10);
}

void loop(){
    pixels.clear();
    for(int i = NUMPIXELS; i >= 0; i--){
        pixels.setPixelColor(i, pixels.Color(255, 0, 255)); //this should make a magenta color
        pixels.show();
        delay(1000); //delays for 1 second
    }
}