re:Re: Height Gage DRO

Hi Ballendo,

That makes sense with the encoder disk lines.

The appnote was well done by Stephen Bowling (AN718 :Brush-DC
Servomotor Implementation using PIC17C756A)

I did AN702 and worked on some others non-credited. Most of my time
was in customer support and implementation issues
of the Pics in customer cases.

I'm going to do similar project with the TI 'C5402 DSP sometime in
the near future. The TI development
tools are really nice for C or assembly.

-Lee

> Is it possible the two 'lines' are 90 degrees out of phase? That

the

> two led pairs are just quadrature output? We usually see both
> of 'em "reading" the same 'line' of the disk, but there's no reason
> why they couldn't be 'reading' from 2 sets of lines, if designed

that

> way...
>
> P.S. Lee, Were you involved in the single axis pic servo system in
> the embedded systems app book (I mentioned earlier)?