--- In
Homebrew_PCBs@yahoogroups.com, Alan King <alan@n...> wrote:
> But, I do have plans to focus one of my webcams in very close,
put it
> right next to the bit, and move up and down. 640 pixels from 1/4"
away
> and move the bit up and down should detect if there is any off
angle a
> little better than using a normal visual method, should get it
very
> close to perfect on one pass.
If you find a web cam that can do that or figure out how to adapt
one, please let me know. I can't get any of the 4 I own to focust
closer than about a foot and a half away. I've looked for close up
lenses, but all I can find are for the higher end cameras.
Having the ability to do close up with a web cam is the first step
in machine vision automation on the hobby level. The software is
becomming available, the only real cost at this point is the high
end cameras you have to buy.