4. November 2010

<pre>int LED[] = {2,3,4,5,6,7,8,9,10,11};

long time = 0;
int frequency = 60;

void setup() {
 for (int i=0; i<=9; i++) {
 pinMode(LED[i], OUTPUT);
 }
}

void loop() {
 loop1();
 loop2();
}

void loop1() {
 for (int i=0; i<=9; i++) {
 digitalWrite(LED[i], HIGH);
 if (i!=0) {
 digitalWrite(LED[i-1], LOW);
 }
 delay(frequency);
 }
}

void loop2() {
 for (int i=9; i>=1; i--) {
 digitalWrite(LED[i], LOW);
 if(i!=1) {
 digitalWrite(LED[i-1], HIGH);
 delay(frequency);
 }
 }
}