A Portable & Cost Effective Human Computer Interface Device for Disabled

The development of the computers has made human life more comfortable. Human -- computer Interaction (HCI) involves the study, planning, and design of the interaction between people (users) and computers. This research paper aims at the development of a portable and cost effective wireless eye movement-controlled HCI which can be used for the disabled who have motor paralysis and their hands cannot be used in multiple applications. A new mouse is proposed as an input device whose operation is based on measurement of rotations of the user´s head and detection of eye blinks. The software and hardware implementation of this HCI interface have been done using Linux platform and ATMEGA328 microcontroller respectively. The results show that the proposed system works efficiently and produces an error rate that allows it to be used as part of HCI. Thus, the system provides a flexible and cost effective method for the disabled to improve the quality of life.