Indoor navigation can be difficult for blind and visually impaired (BVI) people, especially in dark, cluttered, or unfamiliar spaces where obstacles may not be detected early enough through vision alone. This paper presents \textit{Belt for BVI People}, a wearable obstacle-detection belt that uses three Time-of-Flight (ToF) sensors and vibrotactile feedback to communicate nearby obstacle direction. The final artifact uses three ToF sensors positioned for left, center, and right obstacle sensing, an Arduino microcontroller for sensor processing, a MOSFET motor driver board for motor switching, a 9V battery to power the Arduino, and a two-AA battery pack to power the vibration motor circuit. The haptic output is organized into two motor groups: three vibration motors on the left side of the waist and three vibration motors on the right side of the waist. When the left sensor detects an obstacle within the programmed threshold, the left motor group vibrates; when the right sensor detects an obstacle, the right motor group vibrates; and when the center sensor detects an obstacle, both groups vibrate at the same time.
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Navigation tool for BVI
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