Here,I used two ultrasonic sensor for sensing the objects from its place. one of the sensor is placed at the bottom and another one is placed at the top of the stick for sensing the objects from different heights. when an object will be sensed by one of these two sensors,the buzzer's sound will be noising at that time then the blind person can understand the presence of any object in front of him/her. Change the direction through the stick where buzzer is not heard so that he can move towards in those directions. So this stick will product him instead of crashing with anything else. Using these two Ultrasonic sensors it will be more productive instead of other smart blind stick.
Coponents ↓
1.HC-SR04→ 2
2.Buzzer
3.Arduino UNO
CIRCUIT↓
Download the code here↓
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