Problem with Blink Program

Using Arduino Programming Questions
#1

I want to make two leds blink in the same program, this is the code Im using

void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second

  digitalWrite(12, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(12, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);
}

the computer send me an error when I upload it, What should I change?

#2

caras54:
What should I change?

Change your post to include the error message.

#3

Hi,
Does it compile, it does for me IDE 1.6.7.
Check you have the controller COM correct.

Tom.. :slight_smile:

#4

It compiles and runs fine omm. What exactly does the red, error text say? Just copy and paste it in a quote. I suspect you are not correctly connected to your Arduino, so explain how you have it connected to your computer as well please.

#5

The demo Several Things at a Time is an extended example of BWoD and flashes 3 LEDs, It may help with understanding the technique.

...R

#6

Robin... whoa there!
He's still having trouble connecting and uploading!
millis() comes next!

#7

Nothing wrong with the code. Error is in your IDE settings, board selection, port selection, etc. Make sure nothing is plugged into pins 0 and 1

#8

lastchancename:
Robin… whoa there!
He’s still having trouble connecting and uploading!
millis() comes next!

Sorry. I paid too much attention to the title :slight_smile:

…R

#9

I think the OP has left the building.

#10