/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the Uno and
Leonardo, it is attached to digital pin 13. If you're unsure what
pin the on-board LED is connected to on your Arduino model, check
the documentation at http://arduino.cc
This example code is in the public domain.
modified 8 May 2014
by Scott Fitzgerald
*/
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin 13 as an output.
for (int i=2;i<=11;i++){
pinMode(i, OUTPUT); }
}
// the loop function runs over and over again forever
void loop() {
float r = random(1, 100);
for (int i=3;i<=10;i++){
digitalWrite(i, HIGH); // turn the LED on (HIGH is the voltage level)
delay(r); // wait for a second
digitalWrite(i, LOW); // turn the LED off by making the voltage LOW
}
float t = random(1, 100);
for (int i=11;i>=2;i--){
digitalWrite(i, HIGH); // turn the LED on (HIGH is the voltage level)
delay(t); // wait for a second
digitalWrite(i, LOW); // turn the LED off by making the voltage LOW
}
}