How to Build a Cheap Multi Touch Surface

Step-by-Step Guide

1. 1

   Step 1: Choose a box that can fit a webcam and be at a good working height for you.

   A wooden box is preferable, but any box will do.
   
   If using for a permanent installation, a projector may be useful below the 'screen'.
2. 2

   Step 2: Make hole at base of box wide enough for the camera cable

   , If it is too long, then mount the projector up near the screen, with the mirror next to the webcam on the base of the box. ,, Then place a piece of paper the size of the acrylic over it.
   
   This provides a hard surface to work on, and can also improve tracking performance, whilst providing a projection screen. , Community Core Vision is a good one, as is Touchlib.
   
   There are others, but these two are the two main ones. ,
3. 3

   Step 3: (and projector cables if using one).

4. 4

   Step 4: Secure camera facing up in box base

5. 5

   Step 5: along with projector and front surface mirror if the throw distance is too long.

6. 6

   Step 6: Thread camera and projector cables to computer.

7. 7

   Step 7: Secure a piece of acrylic to open side of box.

8. 8

   Step 8: Activate touch screen software.

9. 9

   Step 9: Test settings

10. 10

    Step 10: camera focus

11. 11

    Step 11: lighting.

Detailed Guide

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