Low-Cost Eye Controlled Software

This project is a low-cost prototype electrooculography system that is based on the ATmega328P which allows people with motor disabilities to write a text on a screen by using only their eye movements. It can really help people with motor disabilities.

Today, most inventors endeavor is to enhance technology by adding more and more natural interfaces. Using our eyes to point, select and scroll is completely intuitive and complements traditional control interfaces.

He uses our eyes as he distinguish the front eye as positive while the back part of our eyes being negative. The retina is responsible for this because the negative concentration charged can be detected at the back of the eyes. The corneoretinal potential, which is roughly aligned with the optic axis and hence rotates with the direction of gaze, can be measured by surface electrodes placed on the skin around the eyes.

Everytime our eye moves the negative pole moves relative to the face and this will change in the dipole potential can be measured on the skin by micro volts. To analyze this voltage into a position, they used two sets of electrodes to measure the differential voltage in the vertical and horizontal direction.

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