mayoogh / arduino-bluetooth-basic Goto Github PK

Connection gets disconnected when device orientation gets changed

I can find the paired devices on paireddevice-list , but I can't connect one of them. Does the app only fit bluetooth 2.0 (HC-05) not 4.0 devices (HC-08 or android phones). How to solve it ?

This app can't connect ble bluetooth. It failed when I clicked the device in devicelist , it just showed " Is it a SPP device? , try again" . How can I fix it , please help me.

I am trying to create a simple bluetooth circuit with led lights where it can connect to a mobile application and turn the led lights on/off remotely. i am using arduino mega 2560 and bluetooth HC-05 with led light in pin 13. i have followed most tutorials online for the schematic. (5v - 5v), (GND - GND), (RX - TX1 18), (TX - RX1 19).

i have tried few different codes which were also gotten online.

int ledPin = 13;
int state = 0;
int flag = 0;

void setup() {
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);

  Serial.begin(9600); // Default connection rate for my BT module
}

void loop() {

  if (Serial.available() > 0) {
    state = Serial.read();
    flag = 0;
  }

  if (state == '0') {
    digitalWrite(ledPin, LOW);
    if (flag == 0) {
      Serial.println("LED: off");
      flag = 1;
    }
  }

  else if (state == '1') {
    digitalWrite(ledPin, HIGH);
    if (flag == 0) {
      Serial.println("LED: on");
      flag = 1;
    }
  }
}

Few applications that i have tried are ArduDroid by TechBitar, LED, Arduino Bluetooth app by HowtoMeChatronics and even tried making my own simple application by MIT app developer. all of them i am able to be connected to HC05 and disconnect them. however, the LED lights does not light up. I am not sure how to test if the bluetooth module can send/receive data from the phone application.

Do let me know where is the error as i am getting the sources online and they seem to work with their set up.