A brief Neopixel strip demonstration using two simple buttons

Lab_2.ino

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
 
 //pin that the strip is connected to
 #define PIN 4

//set some variables
 const int firstbutton = 2;
 const int secondbutton = 3;
 const int lightstrip = 4;

//first argument is # pixels - change to how many you have
 Adafruit_NeoPixel strip = Adafruit_NeoPixel(5, PIN, NEO_GRB + NEO_KHZ800);
 
void setup() {
  // put your setup code here, to run once:
  //initialize strip
  strip.begin();
  strip.show(); //sets all pixels to "off"

  //define which pins are inputs and which are outputs
  pinMode(firstbutton, INPUT);
  pinMode(secondbutton, INPUT);
  pinMode(lightstrip, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  //first set pixel color, then show
  //showPixelColor(n, red, green, blue); n=pixel number, 
  //0 is closest to the arduino
  
while(digitalRead(firstbutton)==HIGH && digitalRead(secondbutton)==LOW)
//while button one is pushed
{  
  for(int i=0; i<5; i++)
  {
    strip.setPixelColor(i, 255, 0, 0);
    strip.show();
    delay(100);
    strip.setPixelColor(i, 0, 0, 0);
    strip.show();
  }
  for(int i=4; i>-1; i--)
  {
    strip.setPixelColor(i, 255, 0, 0);
    strip.show();
    delay(100);
    strip.setPixelColor(i, 0, 0, 0);
    strip.show();
  }
}
while(digitalRead(secondbutton)==HIGH && digitalRead(firstbutton)==LOW)
//while button two is pushed
{
  strip.setPixelColor(0, 157, 0, 255);
  strip.setPixelColor(1, 21, 0, 255);
  strip.setPixelColor(2, 0, 131, 255);
  strip.setPixelColor(3, 0, 255, 221);
  strip.setPixelColor(4, 33, 255, 0);
  strip.show();
}
while(digitalRead(firstbutton)==HIGH && digitalRead(secondbutton)==HIGH)
//while both buttons are pushed
{
  strip.setPixelColor(0, 182, 0, 255);
  strip.show();
  delay(125);
  strip.setPixelColor(1, 255, 0, 246);
  strip.show();
  delay(125);
  strip.setPixelColor(2, 255, 0, 102);
  strip.show();
  delay(125);
  strip.setPixelColor(3, 255, 38, 0);
  strip.show();
  delay(125);
  strip.setPixelColor(4, 255, 161, 0);
  strip.show();
}
//reset colors at the end of each button press
  for(int i=0; i<5; i++)
  {
    strip.setPixelColor(i, 0, 0, 0);
  }
  strip.show();
}