Messages

31

Video P*r*o*b*i*n*g / Re: Driver Installation question

« on: December 01, 2007, 02:54:56 PM »

The slow startr/stop moves are normal, its moving, waiting for a frame, then digitizing 640 points, then moving again..  Lost frames done matter, it only needs one when it needs one..

Art,
I was just rereading your post and I gained some clarity the second time around.   Your program/routine does not actual capture a movie, rather it captures a frame of data, a single frame, and processes it into 640 points. That actual frame of the video is then discarded.  Then you move the gantry equal to the StepOverY value and process a new frame.  Again you analyze and process 640 points, discard that frame and move to the next capture point.   All the movie frames in between are lost.  How am I doing?   

I can't wait till my new laser pointers arrive. 
Thanks for inspiration
Dave

32

Video P*r*o*b*i*n*g / Re: Just purchased a laser line pointer

« on: November 28, 2007, 01:27:26 PM »

Here's a better page for color definition.
http://eosweb.larc.nasa.gov/EDDOCS/Wavelengths_for_Colors.html#red

33

Video P*r*o*b*i*n*g / Re: Just purchased a laser line pointer

« on: November 28, 2007, 01:22:39 PM »

I already said more then I should.  Here's what I'm guessing to be your answer. 

You will use a laser because it shines brighter and can be focused in a line.  Any focused light source can be used, but the little lasers line projectors have the best focusing.
 
The 650 nm is the color's wave length in Nanometers.   Each color has a different frequency (different number).  Any color would work, but I'm using the red because it's there.   

I'll let some smarter guys chime in and correct us both. 

Here's a question for Art:   For a red laser, what are the recommended settings set in your software.   Contrast? Hue? Brightness?    What is your recommended color for this project? 
Dave

34

Video P*r*o*b*i*n*g / Re: Just purchased a laser line pointer

« on: November 28, 2007, 11:25:55 AM »

I believe the difference is color.

http://www.dialight.com/pdf/SolidStateLighting/MDEXLUMCLENGC_C-W.pdf

look on the second page for color distinctions.

35

Video P*r*o*b*i*n*g / Re: Just purchased a laser line pointer

« on: November 28, 2007, 10:46:43 AM »

I also purchased from the same guy a 3.2 volt wall wart.   I could have used a single LIPO 123 battery, but I took the easy way and bought the wall wart. 
Gosh, I have so many wall warts in my basement, I could've probably found one instead of buying it, but it just so happens that I did a search for wall warts last weekend on another EE project and I don't remember running across a 3.2 volt supply.  So I pulled the trigger on this purchase too.   

Dave
 
=========
AixiZ thanks you for your business and support. We show you as the purchaser
of the following:

Item title: Power supply 110-240VAC 3.2VDC 500mA with clips
Web address: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110136388801
Item number: 110136388801
Buyer User ID: .....
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Your total is:
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$13.45 = Total

36

Video P*r*o*b*i*n*g / Just purchased a laser line pointer

« on: November 27, 2007, 09:32:49 PM »

I got it from ebay and it looked small and compact.   Other folks on a laser scanner forum recommended this product. 
http://www.david-laserscanner.com/forum/viewtopic.php?t=130
I'm looking forward to doing some scanning.   I do have a laser level, but its just to big and the line width seems to wide for accuracy. 
Dave

---------------------------------
AixiZ thanks you for your business and support. We show you as the purchaser
of the following:

Item title: 650nm 5mW laser module 3.2VDC line generator 650 nm OEM
Web address: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110133882634
Item number: 110133882634
Buyer User ID: ....
Seller User ID: aixiz_lasers

Your total is:
$8.00 per item
$0.00 insurance (not offered)
$0.00 Sales discounts (-) or charges (+)
$3.50 shipping/handling

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$11.50 = Total

37

Video P*r*o*b*i*n*g / Re: Driver Installation question

« on: November 26, 2007, 03:14:38 PM »

If my camera resolution is less the 640x480, is that OK?   If it is less, then Mach3 will digitize less data, is that a correct statement?

38

Video P*r*o*b*i*n*g / Re: Driver Installation question

« on: November 26, 2007, 01:04:41 PM »

On my machine, the StepOverY value causes the gantry to move in a hesitant, slow and go motion.  Is this normal? 

So if the video frame rate is constant, there will be more frames during the gantry slow period.  Maybe you take that into consideration, or will I expect a denser cloud of points at each slowdown of the gantry?

And maybe I should get my system up and running so I can find out for myself

Thanks for your reply. 

39

Show"N"Tell ( What you have made with your CNC machine.) / Re: Steam Engine Name Plates

« on: November 26, 2007, 10:11:36 AM »

John S,
Where do you get your 20 degree vee bits.   And why do you call it a D bit?    Good looking plaques. 
Dave

40

Video P*r*o*b*i*n*g / Re: Driver Installation question

« on: November 26, 2007, 09:57:20 AM »

I thought I'd bump this thread.   
Any comments about my questions above?
What should the StepoverX be?