Impulse counter

If i put LED like u draw it, it should be OFF on 1-2-3-4 impulse and ON when 5th impulse come at entrance.
I need
1-2-3-4 = ON
5th =OFF
and repeat in circle

Thx alot 4 helping me
I hope I didn't take much of your time

Frank7 said:

If i put LED like u draw it, it should be OFF on 1-2-3-4 impulse and ON when 5th impulse come at entrance.
I need
1-2-3-4 = ON
5th =OFF
and repeat in circle

Thx alot 4 helping me
I hope I didn't take much of your time

Click to expand...

Hi,
Look at this Simulation of your circuit, it works as you would expect.
Pulses 1,2,3,4 = LED ON, P5=LED OFF, P6=LED OFF & Restart [Reset]

Its possible that you have damaged the 4017 output pin used for RESET because you had it connected directly to 0V in your first circuit!

I have added some notes to the Plot to show you how it is working..OK.

EDIT:
If you want the LED to be OFF at RESET [rest] and only come ON at the 1st pulse, let me know.
It will require some extra components.

Like this 2nd image.

Can u explain why did u put that C3 and C4 at Vcc?

If this video if true then i should put LED on Q4 and Reset on Q5 right ?
https://www.youtube.com/watch?v=21jLnp3z9lg&feature=related

Frank7 said:

Can u explain why did u put that C3 and C4 at Vcc?

If this video if true then i should put LED on Q4 and Reset on Q5 right ?
https://www.youtube.com/watch?v=21jLnp3z9lg&feature=related

Click to expand...

hi,
Have you tried the circuits I have just posted, they both work,
The 2nd circuit gives led off at RESET

Yes they work thx alot
I am just curious why did u put C3 and C4 at vcc ?

Frank7 said:

Yes they work thx alot
I am just curious why did u put C3 and C4 at vcc ?

Click to expand...

hi frank,
Thats good news.!
The capacitors are for decoupling the +9V power line, it recommended practice to fit these to avoid problems due to electrical noise on the power lines caused by the switching components.
Noise can cause your circuit to operate erratically, ie: multiple counts etc.