Theremin Setup

theremin.ino

	#define led 13
	#define buzzer 3
	#define echoPin A0
	#define pingPin 10

	int toneCounter = 0;

	void setup() {
		// put your setup code here, to run once:
		Serial.begin(9600);

		pinMode(led, OUTPUT);
		pinMode(buzzer, OUTPUT);
		pinMode(pingPin, OUTPUT);
		pinMode(echoPin, INPUT);
	}