gazolla

    NSDictionary* views = @{@"collectionView": self.collection};
    
    NSArray* sHorizontal = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[collectionView]|"
                                                                   options:0
                                                                   metrics:nil
                                                                     views:views];
    
    
    NSArray* sVertical = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[collectionView]|"
                                                                 options:0

gazolla

/* Define shift register pins used for seven segment display */
#define LATCH_DIO 4
#define CLK_DIO 7
#define DATA_DIO 8

#define Pot1 0

/* Segment byte maps for numbers 0 to 9 */
const byte SEGMENT_MAP[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0X80,0X90};
/* Byte maps to select digit 1 to 4 */

gazolla

const byte LED[] = {13,12,11,10};
#define Pot1 0

void setup()
{
  Serial.begin(9600);
  // initialize the digital pin as an output.
  /* Set each pin to outputs */
  pinMode(LED[0], OUTPUT);
  pinMode(LED[1], OUTPUT);

gazolla

const byte LED[] = {13,12,11,10};

#define BUTTON1 A1
#define BUTTON2 A2

void setup()
{
  // initialize the digital pin as an output.
  /* Set each pin to outputs */
  pinMode(LED[0], OUTPUT);

gazolla

int led1 = 13;
int led2 = 12;
int led3 = 11;
int led4 = 10;

void setup()
{
  // initialize the digital pin as an output.
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);