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???
12/23/10 18:53
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#180261 - Careful with resolution or strength will feel "random"
Responding to: ???'s previous message
8 levels is not so nice. You would really notice the "random" strength of the drum hits when you are hitting close to a level change.

If having a processor with a single ADC input, you can use something like a 4066 to multiplex multiple analog signals to the ADC.

In some situations, you might instead be able to use two comparators and measure the rise time between first and second comparator level and use that as "strength" of the hit.

List of 18 messages in thread
TopicAuthorDate
measuring piezo voltage            01/01/70 00:00      
   Oscilloscope            01/01/70 00:00      
   you ned to read up on ...            01/01/70 00:00      
      piezo sensing            01/01/70 00:00      
         Careful with resolution or strength will feel "random"            01/01/70 00:00      
         Really need ADC?            01/01/70 00:00      
            source impedance            01/01/70 00:00      
               Once digital?            01/01/70 00:00      
         Piezo signals high dynamic range            01/01/70 00:00      
   not 8051 specific?            01/01/70 00:00      
   Some Reference Materials            01/01/70 00:00      
      reference materials            01/01/70 00:00      
   Two comments            01/01/70 00:00      
      one comment on a comment            01/01/70 00:00      
      made good progress            01/01/70 00:00      
         not necessarily a good idea            01/01/70 00:00      
            zener            01/01/70 00:00      
   one important thing            01/01/70 00:00      

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