Combining Variables

Projects Programming
1

I am looking for a way to define a variable that controls multiple pins.

I have leds on pins 3,4,5,6,7 and I would like to combine them into one variable that I could use with digitalWrite to turn all the leds on at once...

Something like digitalWrite(lights, HIGH) and all 5 pins go HIGH.

Thanks!

2

Do some research on port manipulation

3

Make a function:

void turnAllLEDsOn() {
for (int i = 3; i <= 7; i++) {
  digitalWrite(i, HIGH);
  }
}
4

Thanks, I thought about creating a function like that, the problem is I want them to turn off simultaneously! Thanks for the response though!

5

Mpc1055:
Thanks, I thought about creating a function like that, the problem is I want them to turn off simultaneously!

What's your time scale for "simultaneously"? I guarantee you that effect produced by the function Reply #2 will look simultaneous to any mere mortal.

6

Mpc1055:
Thanks, I thought about creating a function like that, the problem is I want them to turn off simultaneously!

Yeah, I would ask why?