Whenever the ultrasonic sensor detects any obstacle led,buzzer,camera turns on...and with tensorflow object detection ,the detected objects name will be feedbacked through earphones +gyroscope used if the blind stick falls from hand buzzer alarms..so that blind man can take it back hope you know opencv and Nueral Networks, machine learning,Tensorflowobject recognition...
download my files..above.. to your tensorflo execute the blindsmartmainscript.py video link-https://youtu.be/jKYtI5abD0o atleast subscribe my channel please