PDF: Re: [avr-gcc-list] sine wave generator. ~~~

[Grant Stockly]

At 07:41 AM 7/26/2002 +0200, you wrote:
> How about this:
>
> http://www.myplace.nu/avr/minidds/
>
> Always been meaning to try it out :-)

Forgot to mention that there is a PDF file not listed on the www 
page...  http://www.stockly.com/adc/ANALOG.PDF

My schematic is a little different than the one at www.myplace.nu.  I 
noticed that he didn't have the last 10k resistor.  All the examples I've 
seen included it, so I don't know which is correct OR better.  All I know 
is that I had very good results.

My 10k were 5% and 4k99 were 1%.  I don't remember what exactly I was 
thinking, but ignore the little transistor schematic.  PD2 is the positive 
input and that's where a biased audio input goes.  If I remember correctly, 
when using 10k/4k99 0xFF was 2.47v, so the biased voltage should be half 
that.  Biasing circuit not shown,  This was a very preliminary circuit from 
4 years ago.

Grant

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