Output taken from Ardiuno 2 & 4 pins, Bluetooth device connected at 6 & 7 pins
For 30Amps Relay 2SC1384 used connected to pin 2, C945 for 10 Amps Relay connected to pin 4 . In Android application Buttons 1 & 3 will work.
Search Bluetooth device first enter 0000 password,
Now start app in Android press connection button ,it will be green below it show the connection status
Then you on or off any Appliances
#include <SoftwareSerial.h>
SoftwareSerial mySerial(7, 6);
#define relay1 2
#define relay2 3
#define relay3 4
#define relay4 5
char val;
void setup() {
pinMode(relay1,OUTPUT);
pinMode(relay2,OUTPUT);
pinMode(relay3,OUTPUT);
pinMode(relay4,OUTPUT);
digitalWrite(relay1,LOW);
digitalWrite(relay2,LOW);
digitalWrite(relay3,LOW);
digitalWrite(relay4,LOW);
mySerial.begin(9600);
Serial.begin(9600);
}
void loop() {
//cek data serial from bluetooth android App
while ( mySerial.available() >0 ) {
val = mySerial.read();
Serial.println(val);
}
//Relay is on
if( val == '1' ) {
digitalWrite(relay1,HIGH); }
else if( val == '2' ) {
digitalWrite(relay2,HIGH); }
else if( val == '3' ) {
digitalWrite(relay3,HIGH); }
else if( val == '4' ) {
digitalWrite(relay4,HIGH); }
//relay all on
else if( val == '9' ) {
digitalWrite(relay1,HIGH);
digitalWrite(relay2,HIGH);
digitalWrite(relay3,HIGH);
digitalWrite(relay4,HIGH);
}
//relay is off
else if( val == 'A' ) {
digitalWrite(relay1,LOW); }
else if( val == 'B' ) {
digitalWrite(relay2,LOW); }
else if( val == 'C' ) {
digitalWrite(relay3,LOW); }
else if( val == 'D' ) {
digitalWrite(relay4,LOW); }
//relay all off
else if( val == 'I' ) {
digitalWrite(relay1,LOW);
digitalWrite(relay2,LOW);
digitalWrite(relay3,LOW);
digitalWrite(relay4,LOW);
}
}