Smart Blind Stick

Blind people need some aid or somebody's help to walk safely. Smart blind stick can prove as a helping hand to help them while walking and help them to understand their environment. In this paper we propose a Smart stick which consists of a stick with all the components and sensors mounted over it. Basically, this smart stick works in two cases. In case 1 the stick detects the obstacle in front with an ultrasonic sensor while in case 2 the servo motor rotates the ultrasonic sensor through angle to detect the obstacle in a crowded place. In both the cases obstacle detection results in buzzer sound to alert the blind person. The switch button is used to shift from case 1 to case 2 and vice-versa. This stick can detect all the obstacles in its range. Proper environments to use are also identified. By using this smart stick, the blind person can walk with confidence and overcome his fear while walking.