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???
07/24/07 06:30
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#142237 - Getting sound from an 8051
Responding to: ???'s previous message
Chico Magalhães said:
Have a way to make this riskless?

If all you want to do is hear a sound from your 8051, then you should be able to connect it direct to a small, cheap speaker.

A simple transistor driver would ensure that you can't damage the 8051 - see: http://www.8052.com/forum/read.phtml?id=38218

You can then start by generating simple square-wave tones from, say, a timer output.
Then try the effects of filtering.

Then experiment with PWM...

List of 23 messages in thread
TopicAuthorDate
How to connect 8051 to PC sound card Line-in?            01/01/70 00:00      
   Wrong question!            01/01/70 00:00      
      why not?            01/01/70 00:00      
         Answers            01/01/70 00:00      
            44khz?            01/01/70 00:00      
               RTFM!            01/01/70 00:00      
               Requirement?            01/01/70 00:00      
         Search terms            01/01/70 00:00      
   analog vs digital            01/01/70 00:00      
      Noise and many waveforms            01/01/70 00:00      
         You need...            01/01/70 00:00      
            Yes or no...            01/01/70 00:00      
         what you want and what you need            01/01/70 00:00      
            Why?            01/01/70 00:00      
      Not necessarily.            01/01/70 00:00      
         re: Not necessarily            01/01/70 00:00      
            Just analog signal            01/01/70 00:00      
               Do you mean by pulse-width modulation?            01/01/70 00:00      
               probably not            01/01/70 00:00      
                  Problably!? I dont want to risk my motherboard            01/01/70 00:00      
                     Getting sound from an 8051            01/01/70 00:00      
                     google for resistive divider            01/01/70 00:00      
                     Chico, the first thing you have to consider ...            01/01/70 00:00      

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