Control LED Using Your Voice Command

In this tutorial I am showing how you can control 3 RGB LEDs using your voice command.

BeginnerProtip58,813

Things used in this project

Hardware components

Arduino UNO

Breadboard (generic)

LED (generic)

3 LED (Red,Green,Blue)

Jumper wires (generic)

HC-05 Bluetooth Module

Software apps and online services

Android IoTBoys

Story

This is very basic project for controlling 3 LED (Red, Green, Blue) using voice control. To accomplish this we have used Bluetooth HC-05 module and an android app IoTBoys available on play store. LEDs will be On/Off on your voice command.

Detail Description and wiring available on www.iotboys.com

Visit www.iotboys.com for more projects.

Article available on https://goo.gl/XjmCJE.

Code

Source Code

String voice;
int RED = 2;
int GREEN = 3;
int BLUE = 4;
void RedOn(){
digitalWrite (RED, HIGH);
}
void RedOff(){
digitalWrite (RED, LOW);
}
void GreenOn(){
digitalWrite (GREEN, HIGH);
}
void GreenOff(){
digitalWrite (GREEN, LOW);
}
void BlueOn(){
digitalWrite (BLUE, HIGH);
}
void BlueOff(){
digitalWrite (BLUE, LOW);
}
void allon() {
digitalWrite (RED, HIGH);
digitalWrite (GREEN, HIGH);
digitalWrite (BLUE, HIGH);
}
void alloff() {
digitalWrite (RED, LOW);
digitalWrite (GREEN, LOW);
digitalWrite (BLUE, LOW);
}
void setup() {
Serial.begin(9600);
pinMode(RED, OUTPUT);
pinMode(GREEN, OUTPUT);
pinMode(BLUE, OUTPUT);
}
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")
{
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 =="green" || voice =="green on"){
GreenOn();
}
else if( voice =="green off" ){
GreenOff();
}
else if(voice =="blue" || voice =="blue on"){
BlueOn();
}
else if(voice =="blue off"){
BlueOff();
}
voice="";
}
}