Sometimes the mouse cursor is jumpy or erratic.
asked 20 Feb '15, 13:51
The eye tracking camera should give a smoothly moving cursor when operated at the range it was focused for - usually about 60 cm. If the eye is moved in closer or farther, at some point you will see erratic cursor movement.
For the best installation (or if a user is having jumpy cursor problems) when first setting up a system use these steps:
How to change the focus:
Sharpie mark at 12:00 position.
After rotation 1/8 turn, the sharpie mark is at the 10:30 position and the usable range is significantly moved in.