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LED down count

Viad

Feb 9, 2012
29
Joined
Feb 9, 2012
Messages
29
Can anyone point the way to a simple circuit or ready made product for a Count Down Display 7 segment or individual leds 9 to 0
I can provide pulses at 1 second intervals but I need a display. I have spent some time searching the net without luck
thanks
 

Viad

Feb 9, 2012
29
Joined
Feb 9, 2012
Messages
29
Yes thanks Olivier, that will probably do the job indeed, I will be triggering it at 1 sec intervals via a relay (Zelio smart relay) omitting the 555 timer, would I require de bounce ?
 

OLIVE2222

Oct 2, 2011
690
Joined
Oct 2, 2011
Messages
690
Hi Viad,

Yes, with a relay you should use a debouncing circuit.
Olivier
 

Viad

Feb 9, 2012
29
Joined
Feb 9, 2012
Messages
29
Do you think that using the 555 as a debounce circuit would be as good/convenient as any other method ?
 
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