Raspberry Pi based smart walking stick for visually impaired person

There are millions of blind persons in the globe who are in constant need of assistance. It is difficult for these visually challenged persons to travel outside their houses on their own. The Smart Blind Stick that we will create provides a better and more convenient way of life for blind people by allowing them to move about independently. Ultrasonic sensors, infrared sensors, GPS, GSM module, one camera, and an earphone are all included in the stick. This system can identify impediments surrounding users up to 400 cm in their path, i.e. forward, left, and right, by integrating an ultrasonic and infrared sensor network. The Raspberry Pi is connected to these ultrasonic sensors for data processing. The Raspberry Pi program calculates the distance from the barrier and notifies the user by sounding the buzzer and displaying the environment through the camera's recorded image. The camera is utilized to recognize objects, and the picture captured by the camera will be captioned and given to the user as audio. This audio will explain what that image is and what should be done if it becomes an impediment, effectively acting as a virtual eye for the blind. Our solution includes a GPS module for determining the current position of the blind person and a GSM module for transmitting the blind person's location to the caretaker.