From: gherold@teachspin.com   
      
   On Monday, May 13, 2019 at 10:22:59 PM UTC-4, AK wrote:   
   > Electronic can be quite frustrating.   
   >   
   > I put together a circuit for a laser alarm.   
   >   
   > It does not work.   
   >   
   > There is no way to tell if a design will be successful even if you follow   
   the authors exact directions.   
   >   
   > I will keep plugging away and reading Practical Electronics for Inventors.   
   >   
   > :-)   
      
   Hmm, Well a common pitfall when starting in electronics is to copy all   
   of some circuit.  Plug it in and find it doesn't work.   
   A better approach would be to build up one little part of it.. make sure   
   you know how that little part is supposed to work, and confirm it's   
   working as expected.  (Or not and go figure out why.)   
   Then add the next little piece.   
      
   Do you have an oscilloscope?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)