Introduction: Aid for Deaf

Hi there, Welcome to my first instructable, in this instructable I am going to teach you how to make a device that displays whatever we speak.

It would be helpful for deaf people to understand what we speak.

Step 1: GATHER YOUR MATERIALS

  1. Arduino Uno R3 or you can use arduino nano (Both of them will work, but I will show you with Arduino Uno)

  2. LCD Display

  3. Bluetooth module

  4. Android Phone

  5. Jumper Wires

  6. Cardboard

  7. Metal Strips (or you can use velcro)

Step 2: GATHER YOUR TOOLKIT

  1. Gluegun and gluesticks
  2. Screwdriver / Double Sided Foam Tape
  3. Your skills and yourself

Step 3: UNDERSTANDING THE CIRCUIT DIAGRAM

In the circuit diagram you can see the connections and you can do it yourself. It is pretty easy.

The circuit: //gnd refers to ground

LCD RS pin to digital pin 12

LCD Enable pin to digital pin 11

LCD D4 pin to digital pin 5

LCD D5 pin to digital pin 4

LCD D6 pin to digital pin 3

LCD D7 pin to digital pin 2

LCD R/W pin to gnd

LCD VSS pin to arduino gnd

LCD VDD pin to arduino 5v

Bluetooth 5v to arduino 3.3v

Bluetooth gnd to arduino gnd

Bluetooth Tx pin to arduino Rx pin

Bluetooth Rx pin to arduino Tx pin

Battery +ve to arduino vin pin

Battery -ve to arduino gnd pin

optional (if you want to adjust contrast) :-

10K resistor between 5V and ground

potentiometer (pot) to LCD VO pin (pin 3)

Attachments

Step 4: GETTING THE CODE

Make sure to disconnect Bluetooth Module before Uploading the code.

// include the library code:
#include

LiquidCrystal lcd(12, 11 ,5 ,4 ,3 ,2);

void setup() {

// set up the LCD's number of columns and rows:

lcd.begin(16, 2);

// initialize the serial communications:

Serial.begin(9600);

}

void loop() {

// when characters arrive over the serial port...

if (Serial.available()) {

// wait a bit for the entire message to arrive

delay(100);

// clear the screen

lcd.clear();

// read all the available characters

while (Serial.available() > 0) {

// display each character to the LCD

lcd.write(Serial.read());

}

}

}

Attachments

Step 5: BASE COMPLETED!!!

Make a rectangular base with cardboard and attach velcro to it. Attach the final circuit on cardboard with Gluegun / Double Sided Foam Tape.

CONGRATULATIONS!!! your base assembly is finished.

Step 6: Download My App

  1. Grab your Android phone and download my app.(Or you can make it on your own)
  2. Install my app.
  3. Go to bluetooth settings on your phone and pair with your bluetooth module (Its Default name is HC-05 / HC-06 and pin is 1234)
  4. Open my app and click on "Connect to Device" and then select your bluetooth module's name.
  5. After it is connected, you can Tap on "click to send" and say something.
  6. It will be displayed on the LCD Display.

Attachments

Step 7: Bye Everybody!!!

Congratulations!!! You made a Aid for Deaf!!! You can now give it to someone needy. If you can't make it or have any Doubts, feel free to ask as it was my first instructables. Please comment below to help improve my skills.