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Author Topic: 555 timer  (Read 2379 times)

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  • Cadet
  • Posts: 1
555 timer
« on: February 25, 2015, 06:58:20 AM »
I have been making a flashing LED using a LM555 timer.  Some of the circuits I have assembled, the LED only lights, does not flash.  Others flash at a specific  voltage.  Low voltage flash is high frequency, high voltage frequency is slow.  How can I adjust the frequency at a given voltage?  I am not an electrical engineer.  Why do some not flash?


  • Administrator
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Re: 555 timer
« Reply #1 on: February 25, 2015, 22:09:00 PM »
maybe they flash too fast for your eyes to see.


  • Newbie
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  • Posts: 6
Re: 555 timer
« Reply #2 on: October 13, 2016, 14:11:59 PM »
Just to check if light is flashing at the fast rate. Can you please make a video and try to see it in slow motion? In this way you will be 100% sure   if the light is flashing. As admin has mentioned above.