int buzzpin=8;
int potval;
int potpin=A5;
int toneval;
void setup() {
  // put your setup code here, to run once:
pinMode(buzzpin, OUTPUT);
pinMode(potpin, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
potval=analogRead(potpin);
toneval=(9940./1023.)*potval+60;
digitalWrite(buzzpin, HIGH);
delayMicroseconds(toneval);
digitalWrite(buzzpin, LOW);
delayMicroseconds(toneval);
}