这个arduino代码的uno板应该怎么连，急。

lvoid setup() {
// put your setup code here, to run once:
pinMode(3, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, INPUT);
}

void loop()
{
// put your main code here, to run repeatedly:
digitalWrite(8, HIGH);
delay(1);
digitalWrite(8, LOW);

long t = pulseIn(9, HIGH);
float d = t * 0.017;
if (d > 20)
{
digitalWrite(3, LOW);
}
else if (d <= 10 && d > 5)
{
digitalWrite(3, HIGH);
delay(100);
digitalWrite(3, LOW);
delay(100);

}
else if (d<5){
digitalWrite(3, HIGH);
delay(50);
digitalWrite(3, LOW);
delay(50);
}

}