Solar powered wheel chair with voice controller for physically challenged persons

Patients involved in physical injuries and disabilities with good mental strength struggle to get through places using the conventional hand powered wheelchair. This paper enables an economic assembly in any existing wheelchair that enables a smart system for automated motion which can be controlled by any Smartphone. The main concept involved is Smartphone which has an operating system as Android which have inbuilt 3 axis accelerometer and Bluetooth Wireless technology. The purpose of our project can be extended to other mobile devices which has Android powered mobile phone by sharing the application that we have developed. The main second part of our system architecture has a microcontroller PIC16F877 which drives the various directions of the dc motor for directional movement of wheelchair and powers the DC motor for linear motion of the wheelchair. The DC motor controls the front wheels for turning the wheelchair while the pair of DC motor connected to the rear wheels enable linear motion.