A Smart Cane for Visually Impaired People made for Level-3 Term-1 Microcontroller, Microprocessor and Embedded Systems Sessional Project created by Abu Nowshed Sakib (1705107), Md Sultanul Arifin (1805097) and Kamruj Jaman Sheam (1805099)

Under the kind supervision of -

• Md. Shariful Islam Bhuyan - Assistant Professor, CSE
• Sukarna Barua - Assistant Professor, CSE
• Md. Masum Mushfiq - Lecturer, CSE

Click the image below to see our project video

• Arduino Uno
• HC-SR04 (Ultrasonic Distance Sensor)
• Servo Motor
• HC-05 (Bluetooth Module)

1. Wire up according to the circuit diagram

2. Install and open Arduino IDE

3. Open the Arduino project in the folder named Arduino

4. Install these libraries from Arduino IDE's Library Manager

   • Servo 1.1.18
   • HCSR04 2.0.0

5. Connect the Arduino UNO through an USB cable (type A/B)

6. Select Arduino UNO in Tools > Board

7. Upload the code to Arduino

1. Initiate developer mode on your Android device
2. Turn on USB Debugging from developer options
3. Connect your android with PC using usb port
4. Install and open Android Studio
5. Open the folder Android App in android studio
6. Select your device from device list
7. Click Run. An app named TheStick will be installed on your device

Connect the app to the stick after powering on the device. Whenever there is an obstacle ahead of the stick with 1 meter distance the app would tell the user to STOP through an audible message and start its 180° scanning procedure. After that it would suggest the user which way to turn - either TURN LEFT or TURN RIGHT - whichever direction has more free space. The user need to rotate in that direction within 5 seconds. After which an audio cue would inform the user that it is ready to detect obstacles again