Overview
This wearable device provides feedback to the visually impaired about their surroundings via vibrational feedback. As objects and obstacles come closer to them, the vibrational motors increase in their power output to alert the user of an incoming obstacle. This vibrational feedback is achieved by having the output of an ultrasonic sensor interpreted and input into the vibrational motors, to switch them on and off at appropriate time intervals in order to give the user an idea of the obstacle ahead. A total of 3 pairs of ultrasonic sensor and motors are used, pointed at different angles in order for the use to have a sense of the contour of the obstacle ahead instead of having a 1-dimensional feedback which may not be very useful in aiding the user in his/her movements.
Hardware
1 x IC555 1 x LM324 Op-Amp 3 x SR04 Ultrasonic Sensors 2 x 2N700 NFET 3 x 5V Coin Vibration Motor
Built With
- 3dprinting
- kicad
- oscilloscope
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