Knight rider

Projects Programming
1 
const int lowestPin = 9;
const int highestPin = 13;


void setup() {
  // set pins 2 through 13 as outputs:
  for (int thisPin =lowestPin; thisPin <= highestPin; thisPin++) { 
    pinMode(thisPin, OUTPUT); 
  }
}

void loop() {
  for (int thisPin =lowestPin; thisPin <= highestPin; thisPin++){
    digitalWrite(thisPin, thisPin);
    delay(100); 
  }
}

It just lights them up (of course not all of them in one time which is the thing i want) and they stay on so how do i make it repeat?

2 
    digitalWrite(thisPin, thisPin);

You need to look at the documentation for the digitalWrite() function, to see what the arguments are supposed to be. Only one is a pin NUMBER.

and they stay on

Because you don't turn them off.

so how do i make it repeat?

There must be about 800 million variations of this code floating around. I find it a bit difficult to believe that you can't find code that works.

3

There must be about 800 million variations of this code floating around. I find it a bit difficult to believe that you can't find code that works.
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Well you see i like to do it myself not copy paste from the internet

4

Well luckily in this case, you can just copy and paste your own code. digitalWrite's second parameter should be HIGH or LOW. Fix that and then copy & paste your for loop so you have one version setting the leds HIGH followed by one that sets them LOW.