Glove for non-seers with voice audio (prototype)

Hello friends !!! This is a special collaborative video between various youtube channels. The proposed theme is project with audio. The project I propose is to make a prototype that can help non-seers. It has two modes of operation, one that is activated with a switch, which depending on the distance will generate a more continuous or discontinuous tone. The other mode of operation is by means of a voice audio, which will tell us with a voice at the distance determined by the ultrasonic sensor.

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Switch: Device to open or close the electric current passage in a circuit. With the vamos you have enabled or disabled the continuous tone mode.

Arduino nano: On this board we will upload the necessary code for the control of the whole project. It will also be responsible for feeding the whole project with 5 volts.

Electrolytic capacitor: It is connected between pin 9 of the Arduino and the speaker, has polarity, so we must take into account when mounting. The recommended value is between 10 to 100 uF x 16 volts.


Pushbutton: When priced it will generate an audio with a human vos, indicating the distance in centimeters, which determined the distance sensor.

Ultrasonic sensor: The mode is an HC-SRo4, a module very common in home projects.

Micro SD memory: Here we will save the audio files in wav format after the conversion of the files, to suit our project


Experimental platelet: This type of board is ideal for making new projects, where we can pack a circuit before taking it to a much better quality printed circuit board.

Micro SD reader module: This module allows us to make an interface write or read files, in the developed project, it makes interface of reading the audio files, with the Arduino and the micro sd card.

Resistor: We will need 2 10Kohm resistors that will go on the switch and pushbutton.


The whole circuit works with 5 volts, to get this voltage we connect the Arduino to a usb cable.

The HC-SR04 module is an ultrasonic sensor, which generates ultrasonic sound for a short time (about 10uS) by applying a pulse of that time on the “trigger” pin. This ultrasonic sound bounces off an object and is received by the “eco” pin, the delay time, between that transmission and reception will determine the distance at which an object is located such as a wall.

The trigger pin is connected to pin number 8 of the Arduino, while the echo pin goes to pin 7.

This circuit has two modes of operation, one is the continuous mode where we will hear that a tone will vary depending on the distance at which the object is, this mode is selected with the switch, the pin used for the switch is 3 in the Arduino.

The other mode of operation is voice mode, where a pushbutton when activated will play us an audio with the distance to which the object is, I chose to use pin 2 on the Arduino to connect the pushbutton.

To be able to read the audio files we will need a micro SD card reader module, which allows us to read the files stored on the micro SD card, these files are in wav format.

The speaker is optional, I would recommend placing a headset instead of the speaker.

In the Arduino one we will upload all the programming, it is the brain of the project that will process, all the user’s orders, process information generated by the modules.





Audio files

Remember that we must upload the audio files in wav format, to the micro sd card, in order to use this project. You can download them at the following link

Download audio files

If you want to use other audio files to change language or for a female vos for example, you must go to the next page, where we can select between different types of female and male voices and other languages, simply by typing a text (tts) and with any program that we have on our pc, we record the audio.

Now if we want to convert the files to the correct wav format this site will be of great help.

For the correct conversion we must go to “Optional settings” and under Modify resolution bits» choose 8 bit, in “Modify the sampling rate” 16000 Hz and in “Modify audio channels” we select stereo.

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