555 blinking led

601

07:40:40

So I can get the led to blink with 555. 
Now if I wanted to let’s say add 8 led’s and make them flip flop 4 on and 4 off  and so on.  How would I do that  I am very new to all this  thanks for any help 

published 4 years ago

592azy2circuitdude

4 years ago

I got it to work. First I increased the 1kohm resistor to around 20kohm. That causes the leds to have a longer off time

592azy2circuitdude

4 years ago

Then I connected the 4 leds from the 5V source through a current limiting resistor of around 150ohm to the output connection of the 555timer.

592azy2circuitdude

4 years ago

The idea is that when the 555timer output a logic high or 5V, the first 4 leds will go on. When the timer output a logic low or 0V, the other 4 leds will go on because the timer will sink the current from the 5V source through the leds.

wyoelk

4 years ago

Maybe this will help _ _ http://everycircuit.com/circuit/5997908791656448 and http://everycircuit.com/circuit/5212107531091968

wyoelk

4 years ago

Or one of these _ http://everycircuit.com/circuit/5727921493508096 or http://everycircuit.com/circuit/5256748451233792 _ please feel free to ask questions and I'll help if I can

592azy2circuitdude

4 years ago

The circuit in your second comment was the concept I had in mind. Swell!

partsfart

4 years ago

thankyou guys

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