SIGN OUT LOUD!

THIS IS HOW THE PROJECT WORKS

• The project was inspired with the idea of controlling robotic arm with the help of hand movements. So we've made a glove that would read the gestures made by the hand and convert it into words helping in communication.
• Five flex sensors are placed on a glove, four for the fingers and one for the thumb. These sensors measure the bend in the fingers and thumb and palm and according to the bend angle value the Arduino Nano microcontroller understands which set of value represent which symbol and transfer the appropriate outcome value to the Android app via Bluetooth which displays and speaks the symbol generated.
• Gyrosensor is used to measure the tilt in the palm.
• The Android app is designed to send serial data to the Arduino Bluetooth module when a button is pressed on the app. The Arduino Bluetooth module at the other end receives the data and sends it to the Arduino through the TX pin of the Bluetooth module (connected to RX pin of Arduino)
• The Flex sensors are connected with resistors of suitable resistance so that the flex sensors work effectively.

COMPONENTS USED:

A GLIMPSE OF HOW IT LOOKS

VIDEO

https://drive.google.com/file/d/1ey0SF9tGQm7lcIFAcsyIBCKHBNwgZzc0/view?usp=sharing

SOURCE CODE

/**************************

#include <SoftwareSerial.h>

SoftwareSerial mySerial(0,1);

const int FLEX_PIN0 = A0;

const int FLEX_PIN1 = A1;

const int FLEX_PIN2 = A2;

const int FLEX_PIN3 = A3;

const int FLEX_PIN4 = A4;

const float VCC = 4.58; // Measured voltage of Ardunio 5V line

const float R_DIV = 100000.0; // Measured resistance of 3.3k resistor

const float STRAIGHT_RESISTANCE = 55000.0; // resistance when straight

const float BEND_RESISTANCE = 150000.0; // resistance at 90 deg

void setup()

{

//pinMode(FLEX_PIN, OUTPUT);

Serial.begin(9600);

pinMode(FLEX_PIN0, INPUT);

pinMode(FLEX_PIN1, INPUT);

pinMode(FLEX_PIN2, INPUT);

pinMode(FLEX_PIN3, INPUT);

pinMode(FLEX_PIN4, INPUT);

}

void loop()

{

// Read the ADC, and calculate voltage and resistance from it

int flexADC0 = analogRead(FLEX_PIN0);

int flexADC1 = analogRead(FLEX_PIN1);

int flexADC2 = analogRead(FLEX_PIN2);

int flexADC3 = analogRead(FLEX_PIN3);

int flexADC4 = analogRead(FLEX_PIN4);

float flexV = flexADC0 * VCC / 1023.0;

float flexR = R_DIV * (VCC / flexV - 1.0);

// Serial.println("Resistance: " + String(flexR) + " ohms");

// Use the calculated resistance to estimate the sensor's

// bend angle:

float angle = map(flexR, STRAIGHT_RESISTANCE, BEND_RESISTANCE,

0, 90.0);

//

Serial.println("BEND: " + String(angle) + " degrees");

if flexADC0<300

Serial.print("BYE");

if ((flecADC0>320)&&(flexADC4>220))

Serial.print("Can I go to the washroom?");

if 350<flexADC1<450

Serial.print("GO AWAY");

if ((flexADC0>300) && (flexADC1>330))

Serial.print("YOU'RE BEAUTIFUL");

if ((flexADC0>330)&&(flexADC1<330)&&(flexADC1<220))

Serial.print("OKAY");

if ((flexADC1>350)&&(380<flexADC2<450))

Serial.print("Peace");

if flexADC2>450

Serial.print("Pardon me");

if ((flexADC3<550)&&(flexADC1>500)&&(flexADC0>430))

Serial.print("Fine");

delay(5000);

}