Published May 25, 2021 © CC BY

Sign Glove

It is a glove that can be used by those who cannot speak to communicate with others in verbal language.

IntermediateFull instructions provided11,174

Things used in this project

Hardware components

Arduino UNO

A glove will also be needed for the placement of the components.

Breadboard (generic)

SparkFun Flex sensor

Jumper wires (generic)

Maximum number of wires required is 20 of each type.

Resistor 10k ohm

USB Connector, OTG

The OTG connector should be according to the smartphone's port.

Software apps and online services

MIT App Inventor 2

It was used to create the app.

Autodesk Tinkercad

Hand tools and fabrication machines

Hot glue gun (generic)

Tape, Scotch

Story

The Problem

Many people across the world cannot speak and they often use body language and sign language to communicate with others but not everyone knows sign language so the mute cannot communicate with everyone using only sign language.

The Solution

This glove can be worn by people who cannot speak and it can help them to communicate by translating their gestures from sign language to verbal language and then pronouncing them with help of a mobile application.

It's Working

It works by recognizing the gestures made by hand with help of flex sensors placed on fingers, flex sensor varies its resistance based on how much a finger is bent and that resistance is sensed by the Arduino and based on the amount of resistance of each sensor, it prints the letter of the gesture on serial monitor. The mobile application reads the serial monitor, prints it on screen and pronounces it.

The following code specifies which variables to use for input of each finger and on which port, you can alter it if you connect flex sensors of different fingers on different ports.

 a = analogRead(A0);//thumb
 c = analogRead(A1);//index
 d = analogRead(A2);//middle
 b = analogRead(A3);//ring
 e = analogRead(A4);//little

The following code is for letter "a" and after defining input of all fingers as variables, it gives command to Arduino to print letter "a" on serial monitor if all fingers except thumb are bent.

if (a < 900 && b > 900 && c > 900 && d > 900 && e > 900 && a > 800 ) {
   Serial.println("a");
 }

All the other letters are printed by similar code with different values for a, b, c, d and e.

Placement of Components

For more information about the placement, refer to the 3D model.

The components will be pasted on glove with help of hot glue.

The Demonstration

This is the demonstration of Sign Glove.

Schematics

Code

The Code

int a = 0;

int b = 0;

int c = 0;

int d = 0;

int e = 0;

void setup()
{
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(A2, INPUT);
  pinMode(A3, INPUT);
  pinMode(A4, INPUT);
  Serial.begin(9600);

}

void loop()
{
  a = analogRead(A0); //thumb
  c = analogRead(A1); //index
  d = analogRead(A2); //middle
  b = analogRead(A3); //ring
  e = analogRead(A4); //little
 {
  if (a < 900 && b > 900 && c > 900 && d > 900 && e > 900 && a > 800 ) {
    Serial.println("a");
  }
  {
  if (a > 900 && b < 900 && c < 900  && e < 900 ) {
    Serial.println("b");
  }
  
  if (a > 900 && b < 900 && c > 900 && d > 800 && e > 900 ) {
    Serial.println("d");
  }
  }
  if (a > 900 && b > 900 && c > 900 && d > 900 && e > 900 ) {
    Serial.println("e");
  }
   if (a > 900 && b > 900 && c < 890  && e < 890 ) {
    Serial.println("f");
  }
     if (a < 900 && b < 900 && c > 890 && d > 890 && e > 890 && a > 800 ) {
    Serial.println("g");
  }
    if (a < 900 && b < 900 && c < 900 && d > 870 && e > 900 ) {
    Serial.println("h");
  }
   if (a > 900 && b > 900 && c > 900 && d > 900 && e < 900 ) {
    Serial.println("i");
  }
  if (a < 900 && b > 900 && c > 900 && d > 900 && e < 900 && a > 800 ) {
    Serial.println("j");
  }
  if (a > 900 && b < 900 && c < 900 && d > 900 && e > 900 ) {
    Serial.println("k");
  }
  if (a < 800 && b < 900 && c > 900 && d > 900 && e > 900 ) {
    Serial.println("l");
  }
  if (a < 800 && b > 900 && c > 900 && d > 900 && e < 900 ) {
    Serial.println("m");
  }
  if (a < 820 && b > 900 && c > 900 && d < 900 && e < 900 ) {
    Serial.println("n");
  }
   if (a > 820 && b < 900 && c < 900 && d < 900 && e > 900 ) {
    Serial.println("o");
  }
   if (a < 880 && b < 910 && c > 900 && d > 900 && e < 890 ) {
    Serial.println("p");
  }
   if (a < 850 && b < 900 && c > 900 && d < 920 && e < 890 ) {
    Serial.println("q");
  }
   if (a < 790 && b < 900 && c < 900 && d > 920 && e > 890 ) {
    Serial.println("r");
  }
  if (a < 960 && b > 900 && c > 900 && d > 920 && e > 890 && a > 940 ) {
    Serial.println("s");
  }
  if (a < 800 && b > 900 && d < 920 && e < 890 ) {
    Serial.println("t");
  }
   if (a > 900 && b < 900 && d > 900 && e < 900 ) {
    Serial.println("u");
  }
  if (a > 900 && b < 900 && d < 900 && e < 900 && c > 900 ) {
    Serial.println("v");
  }
  if (a < 900 && b < 900 && d < 900 && e < 900 && c > 900 ) {
    Serial.println("w");
  }
   if (a > 900 && b > 900 && d < 900 && e < 900 && c > 900 ) {
    Serial.println("x");
  }
   if (a > 800 && b > 900 && d < 900 && e > 900 && c > 900 ) {
    Serial.println("y");
  }
     if (a > 900 && b > 900 && d < 900 && e < 900 && c > 900 ) {
    Serial.println("z");
  }

  delay(2500); 
  }}

Credits

Rushil Saraswat

0 projects • 18 followers

Sign Glove

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

The Problem

The Solution

It's Working

Placement of Components

The Demonstration

Custom parts and enclosures

The App

The 3D Model

Schematics

The Schematic

Code

The Code

Credits

Rushil Saraswat

Comments

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Sign Glove

Sign Glove

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

The Problem

The Solution

It's Working

Placement of Components

The Demonstration

Custom parts and enclosures

The App

The 3D Model

Schematics

The Schematic

Code

The Code

Credits

Rushil Saraswat

Comments

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