Interface System for Disabled Known as Easy Input

The Easy Input project is a head-controlled keyboard and mouse input device that is designed for disabled users.

In the design, accelerometers are used by the system in order to detect the tilting of the user’s head which directs the movement of the mouse in the monitor. Additionally, the clicking of the mouse is done by blinking his/her eye via a reflective sensor which makes this system more beneficial for paralyzed users. The user will be able to scroll through letters with the eye blinking and the selection mechanism will be done through head tilt.

Since the accelerometer is used to detect the head movement and the photo sensor is used to detect eye blinking, both of their outputs are connected on the microcontroller through an A/D converter. A wireless protocol, using RF transmitter, is used for remotely transmitting processed digital information. Through ID filtering, all the correct information is being collected by a wireless receiver. The signals will then be sent through USART to a ground microcontroller. The keyboard or mouse instructions are sent to the computer via PS/2-to-USB cable after the signals are interpreted by the ground microcontroller.

Rest of the project