Impaired people require additional attention by the people around them and also by the people who design artifacts and tools for them. We investigate the interaction design aspects of a wheelchair controller, developed by embedded software engineers in the laboratory, according to the rules of physicality. The purpose of the study is to facilitate impaired people with ease of use while bridging the gap between human-computer interaction and embedded software engineering. By proposing Nintendo's Wiimote as wheelchair controller, we intend to produce intuitive, simple and natural interaction with the wheelchair.