On 05/03/2014 06:23 AM, andy pugh wrote:
> On 3 May 2014 03:56, Jon Elson <el...@pico-systems.com> wrote:
>> Hmm, well, a 4 second lag is pretty bad, if you are using it to
>> center parts under the spindle.  What resolution is that
>> camera?  It seems the lower res ones may have faster
>> update.
> I bought this one:
> http://www.ebay.co.uk/itm/270975087407
> (They have since got even cheaper, and the quality seems to have
> improved, this one might even have a brass shell option:
> http://www.ebay.com/itm/360803447528 )
>
> There is no lag at all.
> Here is a sample picture (of the mm scale of my micrometer)
> http://imagebin.ca/v/1L8Lftd4YXkq
Well, that's the problem, this thing is NOT a microscope, it
has a field of view of over 20 MM!  That is huge.  I want a 
field
of view of a couple mm, max.  I can do this with those
little PC board video cameras by screwing the lens out
from the chip, but it has the disadvantage of having to
add a video monitor to the system.  I use one for
alignment of the centering jaws on my pick and place
machine.

So, I'm going to look for a unit that is specifically sold
as a microscope, even if they cost more.

Jon

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