sipandpuff
Sip-and-puff is an assistive input method that enables people with severe motor impairments to operate equipment by blowing (puff) or sucking (sip) through a mouthpiece connected to a pressure sensor or switch. The resulting signals are interpreted by a control system to generate commands for devices such as powered wheelchairs, computer access interfaces, and environmental controls. In many wheelchair setups, a sip might be mapped to forward movement and a puff to backward or to left/right, with programmable variations to suit the user’s needs. Some configurations use two independent switches to allow more directions or actions, while others support multi-level or timed commands for faster control.
Hardware typically includes a mouthpiece or tube, a sensor or switch module, and an interface to the
Sip-and-puff is mainly used by individuals with high-level spinal cord injuries, ALS, cerebral palsy, or other