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Make LED Blink Specific Num of Times

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axro

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If I want an LED to only blink a certain number of times. Say 5 times. What would be the best way to do that(without a uC). Would it be a monostable 555 to a astable 555? Or is there an easier way to do it will less components?

It doesn't have to be a specific number of times, it just has to be a few.
 
You can use 2 555 timers. One to blink and one to control the blink time of the other. Use the blink one in the astable mode, and the other in the monstable mode.
 
If I want an LED to only blink a certain number of times. Say 5 times. What would be the best way to do that(without a uC). Would it be a monostable 555 to a astable 555? Or is there an easier way to do it will less components?

It doesn't have to be a specific number of times, it just has to be a few.

hi,
A simple circuit like this will do the job.:)

The push switch shorts out the 33uF cap via the 1K, on release the LED will flash.
Adjust the cap values to give the number and duration of the flashes.
 

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Here is how I would do it.
 

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I like the idea of a monstable 555 and a blinking LED. It really simplifies the whole thing.
 
If I want an LED to only blink a certain number of times. Say 5 times. What would be the best way to do that(without a uC). Would it be a monostable 555 to a astable 555? Or is there an easier way to do it will less components?

It doesn't have to be a specific number of times, it just has to be a few.

What do you want it to do after the LED blinks 5 times?
 
Use a 555 to control the blinking of the led, and use a resistor, capacitor and a comparator to control the duration of the blinking.
 
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