[SOLVED] How to add codes for triping the whole blootooth control electrical circuit when blootooth is out of range?

[Himanshu Panchal]

I made a Home automation system in which I used Arduino UNO R3, Bluetooth HC05, and 4 channel relay module in which each relay has its own load. I made a app by using MIT App Inventor to control 4 loads of my circuit via Bluetooth.

The problem i have is this that is i am in 10 m of range i can make Load power ON or OFF but if I suppose to power on my load and i get out of range from the circuit the load remains to be powered on.

I want to know that what can i add to my Programed code so when i get out of range from my circuit it automatically turn off the load connected to 4 of the relay.

This was the program which i compiled to Arduino
int lamp1=2;
int lamp2=3;
int lamp3=4;
int music=5;
int pc=6;
int mobile=7;
int fan=8;
int socket=9;

int Received=0;
int lamp1_state=0;
int lamp2_state=0;
int lamp3_state=0;
int music_state=0;
int pc_state=0;
int mobile_state=0;
int fan_state=0;
int socket_state=0;

void setup(){

Serial.begin(9600);
pinMode(lamp1,OUTPUT);
pinMode(lamp2,OUTPUT);
pinMode(lamp3,OUTPUT);
pinMode(music,OUTPUT);
pinMode(pc,OUTPUT);
pinMode(mobile,OUTPUT);
pinMode(fan,OUTPUT);
pinMode(socket,OUTPUT);

}

void loop(){

if(Serial.available()>0)
{
Received = Serial.read();

}

if (lamp1_state == 0 && Received == '1')
{
digitalWrite(lamp1,HIGH);
lamp1_state=1;
Received=0;
}
if (lamp1_state ==1 && Received == '1')
{
digitalWrite(lamp1,LOW);
lamp1_state=0;
Received=0;
}


if (lamp2_state == 0 && Received == '2')
{
digitalWrite(lamp2,HIGH);
lamp2_state=1;
Received=0;
}
if (lamp2_state ==1 && Received == '2')
{
digitalWrite(lamp2,LOW);
lamp2_state=0;
Received=0;
}

if (lamp3_state == 0 && Received == '3')
{
digitalWrite(lamp3,HIGH);
lamp3_state=1;
Received=0;
}
if (lamp3_state ==1 && Received == '3')
{
digitalWrite(lamp3,LOW);
lamp3_state=0;
Received=0;
}

if (music_state == 0 && Received == '4')
{
digitalWrite(music,HIGH);
music_state=1;
Received=0;
}
if (music_state ==1 && Received == '4')
{
digitalWrite(music,LOW);
music_state=0;
Received=0;
}

if (pc_state == 0 && Received == '5')
{
digitalWrite(pc,HIGH);
pc_state=1;
Received=0;
}
if (pc_state ==1 && Received == '5')
{
digitalWrite(pc,LOW);
pc_state=0;
Received=0;
}

if (mobile_state == 0 && Received == '6')
{
digitalWrite(mobile,HIGH);
mobile_state=1;
Received=0;
}
if (mobile_state ==1 && Received == '6')
{
digitalWrite(mobile,LOW);
mobile_state=0;
Received=0;
}

if (fan_state == 0 && Received == '7')
{
digitalWrite(fan,HIGH);
fan_state=1;
Received=0;
}
if (fan_state ==1 && Received == '7')
{
digitalWrite(fan,LOW);
fan_state=0;
Received=0;
}

if (socket_state == 0 && Received == '8')
{
digitalWrite(socket,HIGH);
socket_state=1;
Received=0;
}
if (socket_state ==1 && Received == '8')
{
digitalWrite(socket,LOW);
socket_state=0;
Received=0;
}

}

 

[kanewolf]

I don't see anything in that code that checks the state of the bluetooth link. You would have to add something to verify that the Arduino was still paired and active. That is what you have to key on.

This article might help -- https://arduino.stackexchange.com/questions/48337/arduino-reads-hc-05-device-connecting-status