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555 Timer LED project HELP !!

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555 Timer LED project HELP !!

Postby rokz_2005 » Wed Jun 15, 2011 7:37 pm

Hey guys my first thread

My first project which I'm learning basic electrics with.
I'm still awaiting my delivery for parts hence I cant test this.

plus I'm sure you guys will be able to tell me where I'm going wrong by just looking at it instead of me frying it then realising 'oh yea'

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This is the final schematics for having a dual timed monostable set up with either button to reset the 555 while on a monostable run.

in this set up the output can be motor, LED's or a bleeper.

Can you guys tell me if I've gone wrong anywhere or will this work.

THE PURPOSE OF THE CIRCUIT
- Press either switch to start its respective timer. (one timer to run at any one time)
while the timer runs for 10 seconds if for any reason I want to cancel the timer I could press ANY button.
So now there are no timers running, then I go back to step one.
basically while the timer is running then either of the switch turns into a cancel button.

I don't know how to do this yet but I would like to add a 1 second delay to the timer. However I want the cancel to be instantaneous

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With the help of some other people I have (or we have) come up with 2 Schematics.

Thanks
Attachments
AAesp01.gif
AAesp01.gif (19.71 KiB) Viewed 6475 times
555 n spno.jpg
With a SPNO relay
555 n spno.jpg (15.03 KiB) Viewed 6475 times
rokz_2005
 
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