How to make a LED blink for 5 secs in 555 timer?

[zedarab]

question on 555 timer

how to make an led to blink for 5 secs and then off by itself? anyone can help...

thank you for helping.

 

[djalli]

question on 555 timer

Using a microcontroller for sure you can do it.

If you want to use 555 then use it with a relay to turn off the circuit after 5 seconds.

 

[Tukito]

Re: question on 555 timer

You can find a lot of useful info in here :

**broken link removed**

 

[nand_gates]

Re: question on 555 timer

Hi
You can do it with 2 555 ICs
First one you configure as 5 sec single shot.
Second one with 1Hz astable multivirator.
Out put of first 555 will be active low you connect it to
reset pin of second 555 IC. Since reset is active low
you need to add a transistor invertor as shown in attched
block diagram
Hope this helps

 

[DarkJedi]

Re: question on 555 timer

microcontroler??? relay???? 2 555 circuits????

you can do a monostable with one 555, use a pulse to trigger it and there you go, problem solved....

Get the 555 datasheet and look at the circuit there, is really easy to build, it should give you any problems.

 

[fsmyth]

Re: question on 555 timer

There are quite a few example circuits using the 555 at:

**broken link removed**

Look on Timers page 2.

<als>

 

[e_eja]

Re: question on 555 timer

use mode asable for 555, and look at the picture.[/img]

 

[Jack// ani]

Re: question on 555 timer

This 555 timer designer will be vey useful for u

ftp://ftp.islandnet.com/Schematica/files/SS55511.exe