Grilo.ino

const int speakerPin = 5;
//const int sensorPin = 0;

const int highChirp = 20;
const int lowChirp = 14;

const int chirpCycle = 70;
const int chirpPause = 8;
const int numChirps = 10;
const int midChirp = 150;
const int skittish = 5000;

void setup() {
	pinMode(speakerPin, OUTPUT);
	//pinMode(sensorPin, INPUT);
}

void chirp() {
	for (int i=1; i<=numChirps; i++) {
		for (int j=1; j<=highChirp; j++) {
			digitalWrite(speakerPin, HIGH);
			delayMicroseconds(chirpCycle * 10);
			digitalWrite(speakerPin, LOW);
			delayMicroseconds(1000-(chirpCycle * 10));
		}
		digitalWrite(speakerPin, LOW);
		if (i==numChirps/2) delay(midChirp);
		else delay(lowChirp);

	}
	if ((random(chirpPause)) == 1) delay(random(200,1000));
	else delay(midChirp);
}

void loop() {

	//while(analogRead(sensorPin) <= 64) {
		chirp();
	//}
}