555 hand-held test coins simple circuit diagram

  
555 hand-held test coins simple circuit diagram - schematic



 

Recommended videos


  • HOMEMADE METAL DETECTOR ~ Simple
     
  • Simple Automotive 12V Delayed ON Relay Circuit ~ Interior Lights
    Duration: 6:24.
  • HOW TO DIY ONE OF THE BEST METAL DETECTOR CIRCUITS (Subscribe
     

News


    .