#include <MeMCore.h>
MeBuzzer buzzer;

void setup() {

}
void loop() {
  buzzer.tone(600, 300); //Buzzer sounds 600Hz for 1000ms
  delay(2000); //Pause
  buzzer.tone(1200, 500); //Buzzer sounds 1200Hz for 1000ms
  delay(2000); //Pause
}