Voice Based Light Toggle With Android App In Arduino Mega 2560

Introduction

In this article, I will explain the voice-based light ON/OFF with the Android app In Arduino Mega 2560.
It can be fully controlled by voice.
It can be controlled by the app.

Parts Of Lists

Arduino Mega2560
Bluetooth
LEDs- 05
Hook-Up Wires
Bread Board

Connection

Step 1: Connection from Bluetooth To Arduino Mega 2560

Bluetooth	Board
Vcc	5v
Gnd	Gnd
Tx	Rx
Rx	Tx

Step 2: Connection for the LEDs

Leds	Postive side	Negative side
Led1	12	Gnd
Led2	13	Gnd
Led3	14	Gnd
Led4	15	Gnd
Led5	16	Gnd

Programming

//Coded By: Angelo Casimiro (4/27/14)
//Voice Activated Arduino (Bluetooth + Android)
//Feel free to modify it but remember to give credit
String voice;
int
led1 = 12, //Connect LED 1 To Pin #2
led2 = 13, //Connect LED 2 To Pin #3
led3 = 14, //Connect LED 3 To Pin #4
led4 = 15, //Connect LED 4 To Pin #5
led5 = 16; //Connect LED 5 To Pin #6
//--------------------------Call A Function-------------------------------//
void allon()
{
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
}
void alloff()
{
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
}
void setup()
{
Serial.begin(9600);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
}
void loop()
{
while (Serial.available()) { //Check if there is an available byte to read
delay(10); //Delay added to make thing stable
char c = Serial.read(); //Conduct a serial read
if (c == '#')
{
break;
} //Exit the loop when the # is detected after the word
voice += c; //Shorthand for voice = voice + c
}
if (voice.length() > 0)
{
Serial.println(voice);
//----------Control Multiple Pins/ LEDs----------//
if (voice == "*all on")
{
allon();
} //Turn Off All Pins (Call Function)
else if (voice == "*all off")
{
alloff();
} //Turn On All Pins (Call Function)
//----------Turn On One-By-One----------//
else if (voice == "*TV on")
{
digitalWrite(led1, HIGH);
} else if (voice == "*fan on")
{
digitalWrite(led2, HIGH);
} else if (voice == "*computer on")
{
digitalWrite(led3, HIGH);
} else if (voice == "*bedroom lights on")
{
digitalWrite(led4, HIGH);
} else if (voice == "*bathroom lights on")
{
digitalWrite(led5, HIGH);
}
//----------Turn Off One-By-One----------//
else if (voice == "*TV off")
{
digitalWrite(led1, LOW);
} else if (voice == "*fan off")
{
digitalWrite(led2, LOW);
} else if (voice == "*computer off")
{
digitalWrite(led3, LOW);
} else if (voice == "*bedroom lights off")
{
digitalWrite(led4, LOW);
} else if (voice == "*bathroom lights off")
{
digitalWrite(led5, LOW);
}
voice = "";
}
} //Reset the variable after initiating

Explanation

We can control the LEDs by the voice, through the Android app
If we want to turn ON the light, we set the voice as the "Light ON"
If we want to turn OFF the light, we set the voice as the "Light OFF"
We can also set the voice for "All on" and "All Off".
They can work on a one-by-one process.
We want to download the app from the play store.

Output

8 Comments

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Shobana J10y ago
Keep sharing.Nice one
Sr Karthiga10y ago
Thank you prasanna
Sr Karthiga10y ago
Thank you vignesh main sir
Sr Karthiga10y ago
Thank you raja
Santhakumar Munuswamy10y ago
Nice share
Prasanna Murali10y ago
Nice one..
Vignesh Mani10y ago
Nice share
Raja10y ago
Good One..