Blind glass for visually impaired using audio

Published Jun 30, 2026

MIT

3 hours to build

Beginner

arduino

smart glass designed for visually impaired people that detects obstacles and objects using sensors. The system converts the detected information into audio alerts, helping users move safely and independently. This enhances navigation, safety, and accessibility in daily life.

Components Used
DFPlayer- A Mini MP3 Player MP3 Player Audio Arduino Platform Evaluation Expansion Board	X 1
Arduino Nano Arduino Nano	X 1
Connecting Wire Jumper Wires Connecting Wire Breadboard wires	X 1
Speaker Speakers & Transducers 28 mm, Round Frame, 0.25 W, 32 Ohm, Neodymium Magnet, PET Cone, Speaker	X 1
Ultrasonic Module HC-SR04 Ultrasonic module HC-SR04 is generally used for finding distance value and obstacle detection. It can operate in the range 2cm-400cm.	X 1
3.7V Lithium Polymer Battery Battery Packs Li-Polymer Battery 3.7V 2000mAh	X 1
sunglasses They protect your eyes against the sun's UV rays, which could otherwise lead to cataracts. They protect against "blue light" from the solar spectrum, which could increase your risk of macular degeneration. They lead to improved and more comfortable vision from not having to squint.	X 1

Description

The Blind Glass for Visually Impaired Using Audio is a wearable assistive device designed to help visually impaired people move safely and independently. First, an ultrasonic sensor mounted on the glasses continuously scans the surroundings and detects obstacles in front of the user. The sensor sends distance information to a microcontroller such as an ESP32 or Arduino. The microcontroller processes the data and determines how close the obstacle is. When an object is detected, the system provides audio feedback through a speaker or earphones. If the obstacle is far away, a slow warning sound is produced; as the object gets closer, the warning sound becomes faster or a voice message is played. This allows the user to understand the environment and avoid collisions. The entire system is powered by a rechargeable battery and is lightweight enough to be worn comfortably as smart glasses. Such systems are commonly built using ultrasonic sensing and audio guidance technologies for obstacle detection and navigation assistance. Step 1: Gather Components

Collected all the required components:

Arduino Nano

Ultrasonic Sensor

DFPlayer Mini MP3 Module

Mini Speaker

Rechargeable Lithium Battery

Jumper Wires

Resistors

Glass Frame

Step 2: Connect the Circuit

Connected the ultrasonic sensor to the Arduino Nano to detect obstacles. Connected the DFPlayer Mini and speaker to play audio alerts. Connected the rechargeable battery to power the circuit.

Step 3: Upload the Program

Uploaded the Arduino code using the Arduino IDE. The program continuously checks for obstacles and sends voice alerts when an object is detected.

Step 4: Fix Components on the Glass

Mounted the ultrasonic sensor at the front of the glasses. Fixed the Arduino Nano, DFPlayer Mini, battery, and speaker securely on the frame.

Step 5: Testing

Powered on the smart glasses and tested them by placing objects at different distances. The glasses successfully detected obstacles and provided voice alerts through the speaker.

Step 6: Final Project

The completed smart glasses help visually impaired users walk safely by detecting nearby obstacles and providing clear audio guidance.

Video