In this repository The The code & proper instruction for the project
"Ultrasonic Glasses for blind people" can be found
- Proper preview of this project can be found :
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and Here : ( click )
- With this glasses on, A blind people can easily navigate his/her environment.
- The ultrasonic sensor in the glass measures the distance from an obstacle infront and sends it to the esp8266 microcontroller.
- The microcontroller then does the logic, so that if the obstacle distance from sensor is less than 35cm, Then it turn on the buzzer and led.
- Also if the distance gets lower then this alert signal intensifies and vice versa.
- Nodemcu (esp8266)
- Ultrasonic sensor
- Active buzzer & Led light
- Switch
- Jumper wires
- Li-ion Rechargable Battery
- After all the components are there, connect them according to the following circuit diagram :
- Using a breadboard in connection will be helpful.
- Download & install the Arduino ide to upload code to esp8266.
- Download & install the esp8266 board in the arduino ide by following this .
- Take the code from "ultrasonic_glass.ino" and paste it in a new sketch in the arduino ide.
- Connect the Nodemcu to your system, and in arduino ide select it's port and board (in tool option).
- Then click upload code. After the code uploaded the nodemcu will quicky start it's operation.
After the Hardware part & Software part is complete :
It will start it's operation.
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It can also show the measured distance from the Obstacle. To see It :
- After following Hardware & software part, connect the circuit again to your system.
- In the Arduino Ide open serial monitor and choose the baud rate = 9600.
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It can be powered by the usb cable and a charger.
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But in order to power it on battery a proper power source is required.
- In this project 2 Li-ion 18650 rechargable batteries are used.