DK-bluetooth-controlled-relay HostChoice.net

HostChoice.net: DK-bluetooth-controlled-relay
Posted in: code | by HostChoice.net | 2016 Dec 12

The original code was found on

http://forum.arduino.cc/index.php?topic=248686.0

but there were a lot of errors in the format.

After working out most of the bugs, this version is able to handle as many relays as there are digital i/o pins.

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 404303223

#include <SoftwareSerial.h>

SoftwareSerial mySerial(6,7);

//----Global variables for the pins---//
int pin1 = 6;
int pin2 = 7;
int pin3 = 8;

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);
  pinMode(pin3,OUTPUT);
  digitalWrite(pin1,LOW);
  digitalWrite(pin2,LOW);
  digitalWrite(pin3,LOW);

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

void loop()
{
   char c;
      if (!Serial.available())
      return;
	
   delay(100);
   while (Serial.available() > 0) {
      c = Serial.read();
      switch (c) {

case '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");
         }
      break;

case '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");
         }
      break;

case '3':
         if(digitalRead(pin3)==LOW) {
            digitalWrite(pin3,HIGH);
            digitalWrite(pinLED,HIGH);
            Serial.println("Relay 3: On");
         } else {
            digitalWrite(pin3,LOW);
            digitalWrite(pinLED,LOW);
            Serial.println("Relay 3: Off");
         }
      break;

default:
         Serial.println("unhandled command ");
         Serial.println(c);

} // end switch
   } // end while
} // end void

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