Teste_matriz

byte velha [8][8] = {
  {0, 0, 1, 0, 0, 1, 0, 0},
  {0, 0, 1, 0, 0, 1, 0, 0},
  {1, 1, 1, 1, 1, 1, 1, 1},
  {0, 0, 1, 0, 0, 1, 0, 0},
  {0, 0, 1, 0, 0, 1, 0, 0},
  {1, 1, 1, 1, 1, 1, 1, 1},
  {0, 0, 1, 0, 0, 1, 0, 0},
  {0, 0, 1, 0, 0, 1, 0, 0}
};
//-----------------------------------
void setup()
{
 Serial.begin(9600);
  }
//------------------------------
void loop() {

  Serial.println( velha[2][2],HEX);
  Serial.println( velha[2][4],HEX);
  Serial.println( velha[3][3],HEX);
  Serial.println( velha[0][2],HEX);
  Serial.println( velha[1][1],HEX);
  Serial.println( " ");
  velha[2][2] = 0;
  velha[2][4] = 0;
  velha[3][3] = 0;
  velha[0][2] = 0;
  velha[1][1] = 0;
  Serial.println( velha[2][2],HEX);
  Serial.println( velha[2][4],HEX);
  Serial.println( velha[3][3],HEX);
  Serial.println( velha[0][2],HEX);
  Serial.println( velha[1][1],HEX);
  Serial.println( " ");
  while(1){}
}