bluetooth-controlled-relay HostChoice.net

HostChoice.net: bluetooth-controlled-relay
Posted in: HowTo | by HostChoice.net | 2016 Nov 05

Hello all,
I am currently working on a project that uses relays, a little different than the one found in your article here.

http://waihung.net/bluetooth-controlled-relay/

I've attached a picture below of both the relay module and the bluetooth (JY-MCU HC 05). I am using the Arduino Uno as of now and the IN1 and IN2 from the relay module are in pins 6 and 7 respectfully. I modified the code that was provided in order to control 2 relays instead of one. I've attached the code also.

As of now, I can get the IN1 connected relay to turn on and off but not the 2nd relay, I am wondering what I am missing in my code that would make this work.

Additionally, I had to split the wires leading from both the relay module and the bluetooth module in order to connect both to the 5V pin on the Arduino. Is there a better way to do this? because both need a source of power.

Thanks!
Code: [Select]

// code 404303222

#include <SoftwareSerial.h>
SoftwareSerial mySerial(6,7);

//----Global variables for the pins---//
int pin1 = 6;
int pin2 = 7;

int pinLED = 13;

//Initialise for the Arduino setup for OUTPUT to the pins designated as ints

void setup()
{
 Serial.begin(9600);
 pinMode(pin1,OUTPUT);
 pinMode(pin2,OUTPUT);
 digitalWrite(pin1,LOW);
 digitalWrite(pin2,LOW);

pinMode(pinLED,OUTPUT);
 digitalWrite(pinLED,LOW);
 }

void loop()
{
 
 if (Serial.available()) {
   delay(100);
   while(Serial.available() > 0){
//     digitalWrite(pinLED,LOW);

if((Serial.read())=='1') {
     if(digitalRead(pin1)==LOW) {
       digitalWrite(pin1,HIGH);
       digitalWrite(pinLED,HIGH);
       Serial.println("Relay 1: On");
     }else {
       digitalWrite(pin1,LOW);
       digitalWrite(pinLED,LOW);
       Serial.println("Relay 1: Off");
     }
   }

if((Serial.read())=='2') {
     if(digitalRead(pin2)==LOW) {
       digitalWrite(pin2,HIGH);
       digitalWrite(pinLED,HIGH);
       Serial.println("Relay 2: On");
     }else {
       digitalWrite(pin2,LOW);
       digitalWrite(pinLED,LOW);
       Serial.println("Relay 2: Off");
     }
   }

} // end while
   } // end if
   } // end void

}
}

We at HostChoice.net believe the internet should be fun and safe.

Thank you for choosing HostChoice.net...