Paper Title
An Intelligent IOT-enabled Dual-Function Smart Wheelchair System for Assistive Mobility

Abstract
The Smart Dual-Mode Wheelchair provides a better mobility solution enabling persons with disabilities to move about easier and retain their independence. It has voice control where individuals with limited movements in the upper limbs can use it and vibration motors to offer navigation and guidance to the visually impaired users. This design enables individuals to operate the chair without necessarily holding or driving it hence making navigation safer both outdoors and indoors. The system is constructed on the Node MCU microcontroller platform, powered by the L293D motor driver, ultrasonic sensors, a servo-driven obstacle avoidance system, a Bluetooth module, and a Li-Ion battery pack to form a cost effective smart platform. The wheelchair has a mobile app that gives users the opportunity to send voice commands to the device to control its movement. Meanwhile, the ultrasonic sensors and vibration motors will give live obstacle warnings on the basis of directional feedback. The test of the prototype proved that it could perform the simplest navigation functions, including forward, backwards, turning and obstacles evasion, with a stable reaction and sufficient energy consumption to suit daily requirements. The combination of the various forms of interaction, as well as the feedback control through the use of a microcontroller, would go a long way in ensuring safety, comfort, and autonomy to users with mobility issues in the real world. Keywords - Smart Wheelchair, Assistive Technology, IoT, Voice Control, Vibration Navigation, Ultrasonic Sensors, Embedded Systems