From: scientist77017@gmail.com   
      
   On Thursday, May 16, 2019 at 11:21:36 AM UTC-5, default wrote:   
   > On Wed, 15 May 2019 14:31:29 -0700 (PDT), AK   
   >  wrote:   
   >   
   > >On Wednesday, May 15, 2019 at 2:46:05 PM UTC-5, Rodney Pont wrote:   
   > >> On Mon, 13 May 2019 19:22:56 -0700 (PDT), 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.   
   > >> >   
   > >> >:-)   
   > >>   
   > >> Can you post a picture of the assembly so that someone can check that   
   > >> you have understood how to put the circuit together?   
   > >>   
   > >> --   
   > >> Regards - Rodney Pont   
   > >> The from address exists but is mostly dumped,   
   > >> please send any emails to the address below   
   > >> e-mail	rpont (at) gmail (dot) com   
   > >   
   > >https://www.dropbox.com/s/leak8ty4dsmw88e/Project2.jpg?dl=0   
   > >   
   > >https://www.dropbox.com/s/edy9xs8p5rfm15q/Project1.jpg?dl=0   
   > >   
   > >The ne555p chip got fried. I got 0 volts at pins 3 and 6.   
   > >   
   > >I have one left.   
   > >   
   >   
   > Looks to me like R1 is missing entirely, and pin 8 looks like it is   
   > going to ground when it should go to V+   
   >   
   > What is the value of R2?  I'm not familiar with that color code.   
   > Brn, Gry, Blk, Blk, Brn?   
   > >If someone can step me thru this, I will risk my last chip.   
   > >   
   > >Andy   
      
   Pin 8 is going to Vcc.   
      
   R2 is 220 ohms.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)