MakerGram Logo

    MakerGram

    • Register
    • Login
    • Search
    • Categories
    • Recent
    • Popular
    • Tags
    • Users
    • Groups

    Help need in Arduino coding : Arduino with HC05

    Arduino
    arduino bluetooth
    2
    2
    352
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Geethesh
      Geethesh last edited by salmanfaris

      Plese help me to make a Arduino program to make the led blink continuously, when the hc-05 bluetooth module get disconnected from mobile.

      1 Reply Last reply Reply Quote 0
      • salmanfaris
        salmanfaris last edited by

        Hi @Geethesh , Since HC05 is Interfaced with Serial (UART), you can check whether it connected or not in the Serial.available() function call.

        if (Serial.available() > 0) { // Checks whether data is comming from the serial port
          data = Serial.read(); // Reads the data from the serial port
        }
        else {
          // Write what you need if serial is not connected 
        }
        

        full Implementation .

        
        #define led 13
        
        void setup()
        {
          Serial.begin(9600);
          pinMode(led, OUTPUT);
        }
        
        void loop()
        {
          if (Serial.available() > 0) { // Checks whether data is comming from the serial port
            data = Serial.read(); // Reads the data from the serial port
          }
          else {
            ledBlink();
          }
        }
        
        
        
        void ledBlink()
        {
          digitalWrite(led, HIGH);
          delay(100);
          digitalWrite(led, LOW);
          delay(100);
        }
        
        

        All the best .

        1 Reply Last reply Reply Quote 1
        • First post
          Last post

        Recent Posts

        • @codelery Awesome. That's great news. Kudos to @rafitc99 . 🙌

          @codelery Please keep us updated about your project, looking forward to seeing it in action 🤩

          • read more
        • C

          @rafitc99 I changed the buffer and that solved the problem. Thanks a lot for coming to my rescue.

          • read more
        • C

          @salmanfaris I did change the buffer size and everything is working perfectly. Thanks coming to my rescue.

          • read more
        • @codelery said in Help needed: Arduino Wireless Notice Board project:

          I am using the hardware serial (pin 0 and 1 on Arduino Uno)

          As @rafitc99 mentioned, you need to expand the Serila buffer, in the hardware serial also the Arduino board package implements a 64-byte ring buffer for send and receive on the hardware serial messages. So you need to change that to 256 as per your message length.

          • read more
        • C

          @rafitc99 The thing is that I am not using the SoftwareSerial library in receiving the message from the first microcontroller. I am using the hardware serial (pin 0 and 1 on Arduino Uno)

          • read more
        By MakerGram | A XiStart Initiative | Built with ♥ NodeBB
        Copyright © 2023 MakerGram, All rights reserved.
        Privacy Policy | Terms & Conditions | Disclaimer | Code of Conduct