Potentio Indicator Uses RGB Neopixel

In this article I will make a rotation indicator of the potentio meter using RGB Nano pixel ring.

So, how many revolutions made on the potentiometer will be displayed on the RGB ring

the components needed to make it :

• Arduino Nano v.3
• RGB RIng NeoPixels
• Potentiometer
• Jumper Wire
• USB mini
• Project Board

Assemble all components in accordance with the drawdown scheme above.

Arduino to Potensio & RGB Ring

+5V ==> 3.Potensio & VCC

GND ==> 1.Potensio & GND

A0 ==> 2.Potensio

D12 ==> IN

Copy the code below, and paste it into your sketch

<p>#include <br>#ifdef __AVR__
 #include  // Required for 16 MHz Adafruit Trinket
#endif</p><p>#define PIN 12
#define NUMPIXELS 16 </p><p>Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);</p><p>#define DELAYVAL 10</p><p>void setup() {</p><p> #if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif</p><p>pixels.begin();</p><p>pixels.setBrightness(10);
 
 Serial.begin(9600);
}</p><p>void loop() 
{
  pixels.clear();
  int val = analogRead(A0);
  val = map(val, 0, 1023, 0, 18);</p><p> 
  if(val == 1)
  {
    for(int i=0; i<1; i++)
    {
      pixels.setPixelColor(i, pixels.Color(0, 225, 0));
      delay(10);
    }
  }</p><p> if(val == 2)
  {
    for(int i=0; i<2; i++)
    {
      pixels.setPixelColor(i, pixels.Color(32, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 3)
  {
    for(int i=0; i<3; i++)
    {
      pixels.setPixelColor(i, pixels.Color(64, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 4)
  {
    for(int i=0; i<4; i++)
    {
      pixels.setPixelColor(i, pixels.Color(96, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 5)
  {
    for(int i=0; i<5; i++)
    {
      pixels.setPixelColor(i, pixels.Color(128, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 6)
  {
    for(int i=0; i<6; i++)
    {
      pixels.setPixelColor(i, pixels.Color(160, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 7)
  {
    for(int i=0; i<7; i++)
    {
      pixels.setPixelColor(i, pixels.Color(192, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 8)
  {
    for(int i=0; i<8; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 9)
  {
    for(int i=0; i<9; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 225, 0));
      delay(10);
    }
  }</p><p>  if(val == 10)
  {
    for(int i=0; i<10; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 192, 0));
      delay(10);
    }
  }</p><p>  if(val == 11)
  {
    for(int i=0; i<11; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 160, 0));
      delay(10);
    }
  }</p><p>  if(val == 12)
  {
    for(int i=0; i<12; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 128, 0));
      delay(10);
    }
  }</p><p>  if(val == 13)
  {
    for(int i=0; i<13; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 96, 0));
      delay(10);
    }
  }</p><p>  if(val == 14)
  {
    for(int i=0; i<14; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 64, 0));
      delay(10);
    }
  }</p><p>  if(val == 15)
  {
    for(int i=0; i<15; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 32, 0));
      delay(10);
    }
  }</p><p>  if(val == 16)
  {
    for(int i=0; i<16; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 0, 0));
      delay(10);
    }
  }</p><p>  if(val == 17)
  {
    for(int i=0; i<17; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 0, 0));
      delay(10);
    }
  }</p><p>  if(val == 18)
  {
    for(int i=0; i<18; i++)
    {
      pixels.setPixelColor(i, pixels.Color(225, 0, 0));
      delay(10);
    }
  }
 
  pixels.show(); 
  
  delay(DELAYVAL);   
}</p>

Sketch file can be downloaded below:

For results can be seen in the video above.

So every time the potentiometer is rotated, the number and color of the LEDs on the ring will light up according to the number of turns done on the potentiometer.