#define trig 5
#define eco 3
#define v 11
#define r 9
#define a 6

void setup() {
 pinMode(v, OUTPUT);
 pinMode(a, OUTPUT);
 pinMode();
 pinMode();
}

void loop() {
 digitalWrite(trig, HIGH);
delayMicroseconds(2);
digitalWrite(trig, LOW);
delayMicroseconds(10);

}