Smart Glove - GIVING VOICE TO UNVOICED

It consists of five flex sensors placed on the five fingers of the glove which serve the purpose of measuring the bend of fingers during any particular gesture. Flex sensor is a resistive sensor which changes its resistance as per the change in bend or curvature of it into analog voltage. These sensors are able to detect only the activity of the fingers hence some of the letters are not displayed as the gestures of these letters is similar to other letters. Hence, to increase the accuracy, a component called accelerometer has been incorporated in the hardware section which measures the orientation of the hand. Accelerometer can find out the angle of the glove tilted with respect to the earth. It is attached in the middle of the glove to measure the angle of tilted of the glove. The accelerometer uses a single structure for sensing the x, y and z axis. The output voltage of accelerometer changes depending on the tilt with respect to the earth. The microcontroller used in the design is Arduino NANO. As all the outputs from both types of sensors are analog in nature, the output from five flex sensors and three outputs from the accelerometer are given as input to the analog inputs or analog port of Arduino NANO. Arduino NANO has an inbuilt ADC in it which converts these analog inputs into digital output. After receiving these digital outputs coding is done accordingly. All the values of the flex sensors and of the accelerometer are mapped according to each gesture and then code is written for all the gestures.