Is it possible to have put countdown timer?

Need Help With My Project
1

So I was wondering if it possible to put countdown on arduino uno and connection using USB .
Like if I push button the LED will on after one minute it will turn off automatically using a countdown.

Help me . thanks :slight_smile:

2

Yes, that can be achieved with the BlynkTimer.

4

The one that say “simple timer” thing?

5

Yes. There are lots of possibilities with it. For example you can use the setTimeout function to run a function x-seconds after you push a button and stuff like that.

6

like this one ?

void callMeLater() {
// do something
}

timerId = timer.setTimeout(1000, callMeLater);

what that 1000 represent and what can I put in that void call me later?

1 Like
7

The 1000 is in millis (so that is 1 second). In the callmelater you put the code to turn off the LED.