Arduino

int button1Pin = 2;
int button2Pin = 3;
int button3Pin = 4;
int button4Pin = 5;
int button5Pin = 6;
int button6Pin = 7;
int threshold = 500; //Change This
int volume;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(button1Pin,INPUT);//set button as digital input 
  pinMode(button2Pin,INPUT);//set button as digital input 
  pinMode(button3Pin,INPUT);//set button as digital input 
  pinMode(button4Pin,INPUT);//set button as digital input 
}

void loop() {
  // put your main code here, to run repeatedly:
  int button1State = digitalRead(button1Pin);
  int button2State = digitalRead(button2Pin);
  int button3State = digitalRead(button3Pin);
  int button4State = digitalRead(button4Pin);
  int button5State = digitalRead(button5Pin);
  int button6State = digitalRead(button6Pin);
  if(volume>=threshold){
   Serial.print(button1State);Serial.print("; ");Serial.print(button2State);Serial.print("; ");Serial.print(button3State);Serial.print("; ");
  Serial.print(button4State);Serial.print("; ");Serial.print(button5State);Serial.print("; ");Serial.print(button6State);Serial.print("; ");Serial.print(0);Serial.println(";");
 }  
   else{
   Serial.print(button1State);Serial.print("; ");Serial.print(button2State);Serial.print("; ");Serial.print(button3State);Serial.print("; ");
  Serial.print(button4State);Serial.print("; ");Serial.print(button5State);Serial.print("; ");Serial.print(button6State);Serial.print("; ");Serial.print(0);Serial.println(";");
 }
  delay(1000);
}