Annirak Wrote:
-------------------------------------------------------
> ShadowRam Wrote:
> --------------------------------------------------
> -----
> > This will give you absolute encoding to any
> > resolution you want can afford without the need
> for encoded
> > disks or optics.
>
> High-res, low noise ADC's are expensive. This is
> compounded by this design having between 90 and
> 180 degrees of play. A typical pot gives you
> between 270 and 360 degrees of rotation. Also,
> pots wear out. Frequently inconsistently.
[canada.newark.com]
$2
Geared and multi-turn pots have been replacing encoder disks in all manner of automation industries.
Not that he would need a multi-turn in this application.
A lot of these pot's are now rated for 10 million turns.
So if you had one do a 'full' turn, every second, every day, every year.. You'd be good for > 7 years....
If it wears out after that time, you replace it for 1/10 of the cost it would for a full encoder setup.
-------------------------------------------------------
> ShadowRam Wrote:
> --------------------------------------------------
> -----
> > This will give you absolute encoding to any
> > resolution you want can afford without the need
> for encoded
> > disks or optics.
>
> High-res, low noise ADC's are expensive. This is
> compounded by this design having between 90 and
> 180 degrees of play. A typical pot gives you
> between 270 and 360 degrees of rotation. Also,
> pots wear out. Frequently inconsistently.
[canada.newark.com]
$2
Geared and multi-turn pots have been replacing encoder disks in all manner of automation industries.
Not that he would need a multi-turn in this application.
A lot of these pot's are now rated for 10 million turns.
So if you had one do a 'full' turn, every second, every day, every year.. You'd be good for > 7 years....
If it wears out after that time, you replace it for 1/10 of the cost it would for a full encoder setup.