1. Find stepper motor, preferrably one with gearing.

2. Hook up circuits and apply Arduino sketch to test stepper motor.

3. Screw down the lazy susan bracket and platter and fix down parts. Secure motor and fix belt to the wheel.

4. Make project box, and use tape to seal cracks.

5. Set up laser. If you have line laser, just attach it. If you have a point laser, you can either use a rotating mirror  OR use a clear glass beading rod to make a mostly straight line.

http://hackaday.com/2012/03/02/build-your-own-line...

http://www.doityourselfgadgets.com/2012/03/line-laser-for-3d-scanning.html

6. Hook up webcam.

7. Download Processing sketches I have on my Github.

https://github.com/jwcrawley/3D-scanner

8. Take picture using program local to OS:

-use GIMP or other program to find pixels and locate coordinates for center of platter

-set resolution in the video_line_viewer to the size your camera outputs.. manually :(

-determine angle, in radians of platter line to vertical. I use FreeCAD and import image and draw lines, and then measure. You can use Google to do X degrees = ? radians

9. Change variables in the Processing sketch to what you just measured. You will have to change line_processor and scanner both to the appropriate measured numbers.

float cam_angle = is the ange you measure in Step 8 part 3
float turntable_center_horizontal = the first number in Gimp for the coordinate
float turntable_center_vertical =the second number in Gimp for the coordinate

10. Run the video_line_viewer and turn up/down the contrast of laser using potentiometer. Try to get a nice crisp like just above the threshhold. Too much will lead to laserline scatter and muddy the scan.