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Led Flasher
   
This circuit is for amusement only!
It flashes three ledís (possibly of different colours) in sequence.  
The frequency of operation depends on the values of the capacitors and resistors.  
Try 1M resistors and 220n capacitors.
   
 
   
The integrated circuit is a 4584 hex inverting Schmitt trigger.  
   
   
Vero board, copper side.  
 
   
   
Vero board, component side.  
 
   
Now I come to think of it, I did come up with a possible use for this circuit...  
If you take a small section of vero board (having 6 strips, see photo below) and connect adjacent strips in parallel with each of the resistors, you can make a sort of lie detector.  
Tape the piece of vero to the potential liar somewhere (maybe a finger or thumb?).  
If the person starts to sweat due to their recounting terminological inexactitudes... the frequency of the flashing should increase.  
Probably not acceptable in a court of law!  
   
 
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