int led7 = 7 ;
int led8 = 8 ;
int NPB1;
int NPB2;
int CODM1 = 10 ;
int CODM2 = 12 ;

void setup() {
  Serial.begin(9600);
  pinMode(led7, OUTPUT);
  pinMode(led8, OUTPUT);
  pinMode(CODM1, INPUT_PULLUP);
  pinMode(CODM2, INPUT_PULLUP);
}

void loop() {
  Serial.print(NPB1);
  Serial.print(" / ");
  Serial.println(NPB2);

  NPB1 = digitalRead(CODM1);

if (NPB1==LOW) {
   digitalWrite(led7, HIGH);
   delay(200);
   digitalWrite(led7, LOW);
   delay(200);
  }
  else  {
    digitalWrite(led7, LOW);
    
  }
NPB2 = digitalRead(CODM2) ;
if (NPB2==LOW){
  digitalWrite(led8, HIGH);
   delay(200);
   digitalWrite(led8, LOW);
   delay(200);
  }

else {
    digitalWrite(led8, LOW);

  }

}