Re: [CAD_CAM_EDM_DRO] Laser DRO ??

On Monday, April 1, 2002, at 06:42 PM, Bill Vance wrote:

> On Mon Apr 1 17:21:47 2002, baccus61, <rich5886@...> wrote:
>
>> Hi gang,
>> I have been reading with interest all the posts on the digital
>> readouts and just had a thought. Has anyone thought of using the
>> laser mouse for a cheap DRO? These work on almost any surface and
>> seem to have a fair resolution but would the resolution be great
>> enough for the task at hand! I have one pulled apart that was fried
>> in a power surge (along with the rest of my computer) and there
>> isn't much to it.
>> Just a thought and what do you all think?
>> Rich.
>
> Two things; Speed and resolution are working against it. That's not a
> laser
> problem, but a sensor problem.

Actually there is no laser in these mice. Just a high intensity LED.
There have been people that have replaced the red led with blue ones.
Though with less sensitivity. (The CCD is filtered for red.)

-Jerry

> Last I heard, there's no sensor diodes, or
> transistors, etc., that are up to doing the speed needed for super high
> resolution, and the resolution itself returns less and less signal
> strength, the
> tighter the resolution gets. From what I see from time to time, that's
> something that continues to improve, but needs more work to catch up.
>
> Now that's not to say that lasers/sensors ar unusable for our purposes,
> they
> patently are. However, buy mouse crap, get mouse crap.....:-)
>
> Bill
>
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