5

As soon as I plugged my brand new RedBoard (Sparkfun's Uno) into my computer, I saw the onboard LED (for pin 13) blink on and off every 1 second. This was before I even sent the first demo sketch to blink the LED. After I uploaded a sketch to change the blink time, the LED's blink cycle changed as I expected.

But why was the LED blinking before I sent my very first sketch? Is the RedBoard pre-loaded with a sketch?

Improve this question
3
  • If it's not behaving like you expected it to without a sketch, then I'd say that the answer is yes.
    – Ignacio Vazquez-Abrams
    Commented May 6, 2014 at 17:56
  • What is the standard behavior for a brand new OOB Uno or RedBoard when it's first connected to power? Does it differ if that power is from the wall or USB?
    – KatieK
    Commented May 6, 2014 at 18:03
  • @KatieK wall or USB should not make a difference.
    – sachleen
    Commented May 7, 2014 at 3:55

1 Answer 1

Reset to default
2

Yes, the RedBoard is preloaded with the blink sketch (or at least the two that I've purchased have been).

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.