An assistive walking stick prototype designed for visually impaired individuals. This smart stick uses ultrasonic sensors to detect obstacles and alerts the user with a buzzer. It's compact, efficient, and cost-effective — made as part of a science/tech exhibition project.
- Obstacle detection using Ultrasonic sensors
- Buzzer alerts when an object is detected
- Lightweight and easy to carry
- Fully battery-powered and portable
- No breadboard – soldered setup for a compact design
- Ultrasonic sensors continuously measure distance to nearby objects.
- If an object comes within a defined range, a buzzer activates to alert the user.
- Powered using a small Li-ion battery or power bank and designed to be wireless.
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| Ultrasonic Sensor (HC-SR04) | 1 |
| TMB12A12 Buzzer | 1 |
| Jumper Wires | As needed |
| Small Li-ion Battery (optional) | 1 |
| Soldered Connections | Yes |
| Stick Frame | 1 |
ve- of buzzer connects to GND
- Upload the provided
.inofile to your Arduino Nano. - Connect components as per the circuit diagram.
- Power the device using a Li-ion battery or USB.
- The buzzer will alert when any object comes close.
The code is available in the code/blind_stick_code.ino file. It includes:
- Ultrasonic distance detection logic
- Buzzer control
- Adjustable sensitivity via
distanceThresholdvariable
This project is licensed under the MIT License.
- Project built by OM Girkar
- Created as part of a tech exhibition project
- Inspired by assistive tech innovations for visually impaired