Yes a 16F877, I think the problem is I could take as many samples as I
want but junk in = junk out at the end of the day.

I need to figure out why on earth the results I'm getting are less than
predictable, even though I am taking the A2D samples at the same point
in the duty cycle, (from ON to OFF, or a small offset from there.

Ed
On 22 Feb 2004, at 12:59, Dennis Crawley wrote:

> [Edward Cooper]
> Sent: Saturday, February 21, 2004 11:40 PM
> Subject: [PIC]: Using PWM with A2D's
>> Hi guys
>> The problem I am having is that whenever the PWM is running my A2D
>> values are flying all over the place, I am taking the median of 16
>> each
>> time but that isnt helping much.
>
> and you are using...?
>
> With a 16f877 you could run pwm independently of the ad module. In
> fact you
> can take 256 samples into two registers by adding each sample. Then
> read
> only
> the first register. If you need more accuracy than 8bits the method is
> different.
>
>
> Regards,
> Dennis.
>
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