Recognizes inputs from two different switch mechanisms and alters the color of a strip of Neopixels depending on which input is activated

Digital_Input_and_Output.INO

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__ 
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

#define BUTTON_PIN   6  // Digital Input from Breadboard

#define BOARD_PIN    5  // Digital Input from Breakout Board

#define PIXEL_PIN    2  // Digital Output connected to the NeoPixels.

#define PIXEL_COUNT 4  // Number of NeoPixels

// Declare our NeoPixel pixel object:
Adafruit_NeoPixel pixels(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pixels.begin(); // Initialize NeoPixel object
  pixels.show();  // Initialize all pixels to 'off'
}

void loop() {
  // Get current button state.
  int newState1 = digitalRead(BUTTON_PIN);
  int newState2 = digitalRead(BOARD_PIN);

  // If the Breadboard button is pressed
  if (newState1 == HIGH) {
    // If the Breakout Board button is pressed too
    if (newState2 == HIGH) {
      for (int i = 0; i < PIXEL_COUNT; i++) {
        pixels.setPixelColor(i, pixels.Color(255, 0, 0));    // Red
        pixels.show();
      }
    }
    // If only the Breadboard button is pressed
    else {
      for (int i = 0; i < PIXEL_COUNT; i++) {
        pixels.setPixelColor(i, pixels.Color(0, 0, 255));    // Blue
        pixels.show();
      }
    }    
  }

  // If only the Breakout Board button is pressed
  else if (newState2 == HIGH && newState1 == LOW) {
    for (int i = 0; i < PIXEL_COUNT; i++) {
      pixels.setPixelColor(i, pixels.Color(0, 255, 0));    // Green
      pixels.show();
    }
  }
  
  // If no buttons are pressed
  else {
    for (int i = 0; i < PIXEL_COUNT; i++) {
      pixels.setPixelColor(i, pixels.Color(0, 0, 0));    // Black/off
      pixels.show();
    }
  }
}