This project illustrates how to interface a Bluetooth Module and IR reciever with Arduino Board and control the home appliances.
- HC-05 Bluetooth to Serial Port Module
HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.
Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Bluecore 04-External single chip Bluetooth system with CMOS technology and with AFH(Adaptive Frequency Hopping Feature). It has the footprint as small as 12.7mmx27mm.
- TSOP 1838 – IR receiver:
The TSOP1838 is an IR Receiver Modules for Remote Control Systems.
It has the following features:
- Very low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against EMI
• Supply voltage: 2.5 V to 5.5 V
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise.
DEMO :
CIRCUIT DIAGRAM :
Connections of HC-05 with Arduino :
Connections of Arduino with Relay :
CODE FOR PROJECT :
#include <IRremote.h>
#include<LiquidCrystal.h>
//Pin Description
int RECV_PIN = 11;
int RELAY1 = 6;
int RELAY2 = 7;
int RELAY3 = 8;
int RELAY4 = 9;
int LED = 13;
int DATA;
byte serialA;
//Initialize LCD
LiquidCrystal lcd(12,10,5,4,3,2);
//Initialize IR Reciever
IRrecv irrecv(RECV_PIN);
decode_results results;
//Function to decode Remote Data using IR
void dump(decode_results *results) {
int count = results->rawlen;
if (results->decode_type == UNKNOWN) {
Serial.println("Could not decode message");
}
else {
if (results->decode_type == NEC) {
Serial.print("Decoded NEC: ");
}
else if (results->decode_type == SONY) {
Serial.print("Decoded SONY: ");
}
else if (results->decode_type == RC5) {
Serial.print("Decoded RC5: ");
}
else if (results->decode_type == RC6) {
Serial.print("Decoded RC6: ");
}
DATA=results->value;
Serial.print(DATA, DEC);
Serial.print(" ");
}
if(DATA==7136) //1
{
lcd.clear();
lcd.print("LIGHT ON");
digitalWrite(RELAY1,HIGH);
}
else if(DATA==7120) //2
{
lcd.clear();
lcd.print("FAN ON");
digitalWrite(RELAY2,HIGH);
}
else if (DATA==7152) //3
{
lcd.clear();
lcd.print("LIGHT BLINK");
digitalWrite(LED,HIGH);
delay(2000);
digitalWrite(LED,LOW);
}
else if (DATA==7112) //4
{
lcd.clear();
lcd.print("NO DEVICE");
digitalWrite(RELAY4,HIGH);
}
else if(DATA==7144) //5
{
lcd.clear();
lcd.print("LIGHT OFF");
digitalWrite(RELAY1,LOW);
}
else if (DATA==7128) //6
{
lcd.clear();
lcd.print("FAN OFF");
digitalWrite(RELAY2,LOW);
}
else if(DATA==7160) //7
{
lcd.clear();
lcd.print("BLINKING OFF");
digitalWrite(LED,LOW);
delay(2000);
digitalWrite(LED,LOW);
}
else if(DATA==7108) //8
{
lcd.clear();
lcd.print("NO DEVICE");
digitalWrite(RELAY4,LOW);
}
else if(DATA==7140) //9
{
lcd.clear();
lcd.print("NO DEVICE");
digitalWrite(13,HIGH);
}
else if(DATA==7130) //OK
{
lcd.clear();
lcd.print("ALL DEVICES ON");
digitalWrite(RELAY1,HIGH);
digitalWrite(RELAY2,HIGH);
digitalWrite(RELAY3,HIGH);
digitalWrite(RELAY4,HIGH);
digitalWrite(LED,HIGH);
}
else if(DATA==7122) //OFF RED
{
lcd.clear();
lcd.print("DEVICES OFF");
digitalWrite(RELAY1,LOW);
digitalWrite(RELAY2,LOW);
digitalWrite(RELAY3,LOW);
digitalWrite(RELAY4,LOW);
digitalWrite(LED,LOW);
}
}
void Recieve_BT_Data(byte serialA)
{
switch(serialA)
{
case 1:
lcd.clear();
lcd.print("LIGHT ON");
digitalWrite(RELAY1,HIGH);
delay(1000);
break;
case 2:
lcd.clear();
lcd.print("LIGHT OFF");
digitalWrite(RELAY1,LOW);
delay(1000);
break;
case 3:
lcd.clear();
lcd.print("LIGHT BLINK");
digitalWrite(LED,HIGH);
delay(2000);
digitalWrite(LED,LOW);
break;
case 4:
lcd.clear();
lcd.print("FAN ON");
digitalWrite(RELAY2,HIGH);
delay(1000);
break;
case 5:
lcd.clear();
lcd.print("FAN OFF");
digitalWrite(RELAY2,LOW);
delay(1000);
break;
default:
break;
}
}
void setup()
{
pinMode(RELAY1, OUTPUT);
pinMode(RELAY2, OUTPUT);
pinMode(RELAY3, OUTPUT);
pinMode(RELAY4, OUTPUT);
pinMode(LED, OUTPUT);
Serial.begin(9600); //Start the Serial Communication with 9600 Baud Rate
irrecv.enableIRIn(); // Start the receiver
lcd.begin(16, 2);
lcd.clear();
lcd.print(" SMART HOME");
}
unsigned long last = millis();
void loop() {
if (irrecv.decode(&results)) {
if (millis() - last > 250) {
digitalWrite(LED,HIGH);
dump(&results);
}
last = millis();
irrecv.resume(); // Receive the next value
}
if(Serial.available()>0)
{
serialA= Serial.read();
//Serial.println(serialA);
Recieve_BT_Data(serialA);
}
}
LEARN HOW TO MAKE A ANDRIOD APP TO CONTROL APPLIANCES CONNECTED WITH BLUETOOTH
Assembled Project Video :