honduran high schooler’s low-cost eye-controlled interface

Here at ufahari, it always amazes us when we come across something as fascinating as the creative thinking of a young person. Someone who we believe is fearless when it comes to approaching what he wants to achieve. This is the reason why we’re featuring Luis Cruz, a Honduras teen who has come up with his own low-cost eye-controlled interface.

Watch the following video to learn more about this:

Luis explains further:

The human eye is polarized, with the front of the eye being positive and the back of the eye being negative. This is caused by a concentration of negatively charged nerves in the retina on the back of the eye. As the eye moves the negative pole moves relative to the face and this change in the dipole potential can be measured on the skin in micro volts. To translate this voltage into a position, two sets of electrodes are used to measure the differential voltage in the vertical and horizontal direction, on this project, however, just horizontal movements are recorded.