Voice Control Home Automation System Using Arduino and HC-05

THINGS USED IN THIS PROJECT

Hardware components:
	Arduino UNO & Genuino UNO	×	1
	☒ HC-05 Bluetooth Module	×	1
	Jumper wires (generic)	×	1
	Two AC Bulbs(Red,Yellow)	×	1
	Relay (generic) Using 4 Channel Relay	×	1
Software apps and online services:
	Arduino IDE
	IoTBoys (Android App)

STORY

We are showing voice control home automation system to control appliances with own voice command. To accomplish this project using an Android app IoTBoys that is available on google play store. Controlling two AC bulbs (Red, Yellow) using 4 channel relay board.

SCHEMATICS

Circuit Design

Download

Circuit Design for all components

 

code

String voice;

int RED = 2;
int YELLOW = 3;
void RedOn(){
digitalWrite (RED, LOW);
}
void RedOff(){
digitalWrite (RED, HIGH);
}
void YellowOn(){
digitalWrite (YELLOW, LOW);
}
void YellowOff(){
digitalWrite (YELLOW, HIGH);
}
void allon() {
digitalWrite (RED, LOW);
digitalWrite (YELLOW, LOW);
}
void alloff() {
digitalWrite (RED, HIGH);
digitalWrite (YELLOW, HIGH);
}
void setup() {
Serial.begin(9600);
pinMode(RED, OUTPUT);
pinMode(YELLOW, OUTPUT);
digitalWrite (RED, HIGH);
digitalWrite (YELLOW, HIGH);
}
void loop() {
while(Serial.available()) {
delay(10);
char c=Serial.read();
if(c=='#')
{
break; 
}
voice += c;
}
if (voice.length() > 0) {
Serial.println(voice);
if (voice == "on" || voice== "all on")
{
allon() ;
}
else if (voice == "off" || voice=="all off")
{
alloff() ;
}
else if(voice =="red" || voice =="red on"){
RedOn();
}
else if(voice =="red off"){
RedOff();
}
else if(voice =="yellow" || voice =="yellow on"){
YellowOn();
}
else if(voice =="yellow off"){
YellowOff();
}
voice="";
}
}