555 timer

[antiant]

Hi,
I would like to connect power to a 555 chip and have the output light up, a led, once for about 3 seconds then go of, then light up again,for three seconds and go of again, but this time stay off.
I dont know much about electronics, im only learning, but i can make a simple timing circuit, but not sure how to stop the cycle after those few blinks.
If you could discribe some way how i can do this, it would be fantastic.
Thanks

 

[felixc]

Go to the National Semiconductor web site. Search for the LM555. They have techsheets and example circuits that may do exactly what you're looking for.

 

[antiant]

thanks i will check it out

 

[itsmoked]

You and Dino in the same class?? Two 555 questions for the same task the same day...

Check the micro based suggestions on this post:
thread240-151489

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[antiant]

nope not in the same class.
I read that thread, but i think he wants his to keep repeating, i want my to stop after a couple of blinks.
Thanks for the replys

 

[davesaudio]

Since you understand the 555:
take a second 555 with an interval that is two pulses long,
use the second 555 to disable the first 555
or logic gates....