#define BUZZER 0
#define PUSH 1
#define PUSH1 2
#define PUSH2 3
#define PUSH3 4
void setup() {
pinMode(BUZZER, OUTPUT);
pinMode(PUSH, INPUT);
pinMode(PUSH1, INPUT);
pinMode(PUSH2, INPUT);
pinMode(PUSH3, INPUT);
}
void loop() {
if (digitalRead(PUSH)==0){
tone(BUZZER, 200);
delay(100);
}
if (digitalRead(PUSH1)==0){
tone(BUZZER, 150);
delay(100);
}
if (digitalRead(PUSH2)==0){
tone(BUZZER, 200);
delay(100);
}
if (digitalRead(PUSH3)==0){
tone(BUZZER, 150);
delay(100);
}else{
tone(BUZZER, 0);
}
delay(1); // this speeds up the simulation
}