Phil:
It looks like you ran the calibration on the object you wanted to scan as the green reference cross does not center on the turntable center. First of all run the calibration using the chart of squares as OI show in my write-up. you only need to run it once unless you change the laser position or something else physically. The laser looks like it is vertical and centered on the turntable as it should be . Work with the pill bottle only until you know the process is working. With the bottle in place and your are ready to start the scan the laser trace will show following the profile of the bottle but the green cross vertical should align with the turntable center. Then click start scan.
Noel
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Phil:
In thinking overnight I decided to send you something to aid in your scanner calibration process as an attachment. Your PDF viewer should be able to increase the screen size to where you can read the printing in the pictures. For your information, if you are using Windows10 you can take a screen shot by pushing the windows key and prt sc at the smae time and it will be saved in Pictures/Screenshots.
Noel
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No they don't have to. I think the vertical line should be in
the center of the turntable and may well align there after a
calibration is run at least mine does. I believe the lines are
for centering the camera view and obviously center the object
vertically in the view.
Noel
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Phil:
Things look pretty good, I'm encouraged. Upon thinking about
the green line let's change to the green lines show a reference of
where the center of your camera view is aimed and of course is
ideal when the vertical line is centered on the turntable. Take a
look at your calibration sheet position as it seems to be the
reverse of what they show. Also the
/etc/fabscanpi/default.config.json file needs to be looked at and
possibly changed as the vertical distance of turntable to the top
of the bottom square may need to be corrected. The latest changes
and as far as that goes some of the other changes have not been
updated but keep in mind that this all seems to be volunteer work
which does provide money for groceries,etc. I like this latest
change.
The IP of the FabscanPi can can change dynamically although it
usually doesn't. If you have a monitor attached to the PI as you
do it shows toward the end of the bootup screen. Or you can use
http://routerlogin.net (if your router supports it) to find the
location of attached devices. I think the latest release has a
utility to also find the IP but I haven't used it.
The FAQ's show a "My scan is cut-off at top/bottom" with their
answer being to make sure the dimension of turntable to top of
first square is corrected in the default calibration file. I
really haven't had much luck with that. When I looked at the
point cloud files (.ply) with the Notepad text editor my scans do
not go down to the top of the turntable at the bottom but stop
before then. I placed a clear acrylic spacer under the object and
edited the mesh file (.stl) in my drawing program to remove the
bottom garbage and make the bottom flat. The Meshlab program
(you can download free for your operating system) allows you to
load the mesh into it for viewing and you can use it to reduce the
number of points in the mesh to the point where it can be handled
in a 3D drafting program. If you can load meshed .stl files in
your drafting program, trim the bottom and export back to .stl,
which is what I did for the shaker girl that I 3D printed You
have a picture of it in the material which I sent to you. The
point cloud .ply files show 6 values for each point (X,Y,Z-the
vertical, and 3 values for the color/texture. I believe that 3D
printer people aren't really very interested in the last 3
values. A large number of vertical points are recorded for each
turntable rotation position. I suspect that Meshlab can do many
good things to the mesh files but I'm just learning how to use it
a little bit at a time.
You are definitely making progress.
Noel
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Phil:
I've also noticed that you had trouble with the wood laser mount which came with the case kit. There is a thingiverse file for a previous version of the fabscan cube which mounts in the laser location and fits a nema 17 stepper mounting pattern on the case. It is "Laser-Cradle for FabscanPi Cube". I used the parts except for the cradle which has to be higher than the thingiverse design. It places the laser about 75 mm above the case floor (perhaps 3 mm higher than the wooden mount. This will allow the laser to be centered on the intended location. The file I'm attaching is Laser-Cradle-12mm-Fabscan. The notch in the base of the original design has no use for this application. I think the important part is that the laser trace be vertical goes over the turntable center and extends from below the edge of the turntable to as high as it goes. You may have to wedge your laser slightly tilt it up or down to achieve this.
Noel
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