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Per Westermark
03/07/12 00:51
Read: 248 times
Sweden


 		 #186463 - Microcontroller
Responding to: Andy Neil's previous message
In some few situations, another microcontroller can be abused to sample an ADC or a digital pin as fast as possible (for the limited amount of time the internal RAM can store) and then have these samples sent to a PC for view.

Obviously - it requires the microcontroller to have a suitable sampling speed (and memory depth) in relation to the signal that needs to be sampled.
And the signal normally needs some specific behaviour that can be used as trig signal since the memory is too small for just dumb sampling.

A digital oscilloscope is one of the first instruments that should be available when working with electronics. In some situations, it's possible to use an analog scope, but they are often very problematic in relation to one-shot events in microcontroller circuits.

List of 18 messages in thread
TopicAuthorDate
ultrasonic receiver problem      Raju M      03/03/12 05:40      
   You really, really need to get an oscilloscope!      Andy Neil      03/03/12 06:12      
      The joys of working blind        Kalpak Dabir      03/03/12 20:21      
   The same way ...      Joseph Hebert      03/04/12 08:07      
      How do you fry an egg with a sledge hammer?      Andy Neil      03/04/12 12:25      
         First?      Michael Karas      03/04/12 23:05      
            First, and always.      Joseph Hebert      03/07/12 21:29      
   If you cannot afford a scope...        Kai Klaas      03/05/12 06:38      
      This is a kind of dip meter      KONSTANTINOS L. ANGELIS      03/06/12 04:24      
      you are still in trouble      Erik Malund      03/06/12 07:31      
      On-line simulator      Joseph Hebert      03/06/12 10:26      
      You need to save up for a scope!      Andy Neil      03/07/12 00:33      
         Microcontroller      Per Westermark      03/07/12 00:51      
         re You need to save up for a scope!      Erik Malund      03/07/12 07:21      
            Yes, perhaps that's the solution      Richard Erlacher      03/07/12 08:56      
            %$#@! -- it happened again!      Richard Erlacher      03/07/12 08:56      
   Multimeters can't troubleshoot everything      Andy Neil      03/23/12 15:41      
      Yes, and you need ...      Richard Erlacher      03/24/12 08:35      

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