Simultaneously generate 3 output signals

Other Hardware 3rd Party Boards
1

Hi , i have an arduino uno R3. I m trying to generate inside the main loop, 3 different "signals"(output) as :

-one signal to light a red led once every 250 ms;
-one signal to light a blue led once every 500 ms;
-one signal to light a green led once every 1 seconds;

Could you please help me figure out how can i do this ? I think i need inside the main loop, 3 other loops, which should work simultaneously.

Thanks in advance!

2

How do you imagine lights working "simultaneously" if they blink for different periods of time?

To set port pins simultaneously, use direct digital output, for example.

PORTD = 0xFF; //set all output bits of PORTD to 1
3

Thanks @jremington, but

I don't know if i was clear enough, i want to see 3 leds , each blinking at it's own frequency

4

See the tutorial "How to do several things at once".

5

thanks a lot Sir!!!!