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HC-05 Bluetooth Module Interfacing with ATmega32

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In this project, we will learn How to interface a HC-05 Bluetooth Module with AVR ATmega32 microcontroller. Here, we will connect the HC-05 Bluetooth and Android Mobile through Bluetooth and we will send data from HC-05 Bluetooth to Android Mobile.

The communication between HC-05 Bluetooth Module and ATmega32 microcontroller takes place through UART serial communication protocol. The ATmega32 microcontroller will send the string “ABLab Solutions” first and then “www.ablab.in” to the HC-05 Bluetooth Module. The HC-05 Bluetooth Module transmits the received strings to the Android Mobile through bluetooth and the Android mobile displays the received strings in the Bluetooth Terminal App window. After sending each string, the microcontroller sends the carriage return and new line character to HC-05 Bluetooth Module. The carriage return and new line are sent to display “ABLab Solutions” and “www.ablab.in” in two different lines in the Bluetooth Terminal App. The ASCII value of carriage return is 0X0D and new line is 0x0A.

Softwares Required

Hardwares Required

Name / Unit Price Quantity Total Price
AVR Trainer Board-100 with ATmega32
Rs. 730.00
1pc
Rs.730.00
AVR USB Programmer
Rs. 350.00
1pc
Rs.350.00
12V, 1A DC SMPS Adaptor
Rs. 130.00
1pc
Rs.130.00
HC-05 Bluetooth Board
Rs. 400.00
1pc
Rs.400.00
1 to 1 Connector-Female to Female
Rs. 4.00
4pc
Rs.16.00
10 to 10 FRC Female to Female Connector
Rs. 15.00
1pc
Rs.15.00
TOTAL Rs.1641.00

Circuit Diagram

Renaming-HC-05-Bluetooth-Module-Interfacing-with-AVR-ATmega32-Microcontroller-Circuit-Diagram-1024x638

Video

Connection Guide

The step-by-step connection guide for HC-05 Bluetooth Module Interfacing with ATmega32 is as follows:

  • Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.

    Steps - 1 ( 0f 11 )

  • Connect the VCC and GND pins of HC-05 Bluetooth Module with the 5V(VCC) and GND header pins of AVR Trainer Board-100 respectively with 1 to 1 Connectors.

    Steps - 2 ( 0f 11 )

  • Connect the TXD and RXD pins of HC-05 Bluetooth Module with PD0 and PD1 pins of PortD header of AVR Trainer Board-100 respectively with 1 to 1 Connectors.

    Steps - 3 ( 0f 11 )

  • Connect the ISP header of AVR Trainer Board-100 with AVR USB Programmer header of AVR USB Programmer with a 10 to 10 FRC Female Connector.

    Steps - 4 ( 0f 11 )

  • Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-FM Cable.

    Steps - 5 ( 0f 11 )

  • Download the HC-05 Bluetooth Module Interfacing ATmega32 Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.

    Steps - 6 ( 0f 11 )

  • Switch on the power with the help of Power Switch of AVR Trainer Board-100.

    Steps - 7 ( 0f 11 )

  • Pair the HC-05 Bluetooth Module with Android Mobile. Default PIN of HC-05 is 1234.

    Steps - 8 ( 0f 11 )

  • Open the Bluetooth Terminal App in the Mobile and Connect the HC-05 Bluetooth Module with it.

    Steps - 9 ( 0f 11 )

  • Reset the AVR Trainer Board-100 using its Reset switch.

    Steps - 10 ( 0f 11 )

  • See the output in the Bluetooth Terminal Window.

    Steps - 11 ( 0f 11 )

  • Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.

    Steps - 1 ( 0f 11 )

  • Connect the VCC and GND pins of HC-05 Bluetooth Module with the 5V(VCC) and GND header pins of AVR Trainer Board-100 respectively with 1 to 1 Connectors.

    Steps - 2 ( 0f 11 )

  • Connect the TXD and RXD pins of HC-05 Bluetooth Module with PD0 and PD1 pins of PortD header of AVR Trainer Board-100 respectively with 1 to 1 Connectors.

    Steps - 3 ( 0f 11 )

  • Connect the ISP header of AVR Trainer Board-100 with AVR USB Programmer header of AVR USB Programmer with a 10 to 10 FRC Female Connector.

    Steps - 4 ( 0f 11 )

  • Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-FM Cable.

    Steps - 5 ( 0f 11 )

  • Download the HC-05 Bluetooth Module Interfacing ATmega32 Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.

    Steps - 6 ( 0f 11 )

  • Switch on the power with the help of Power Switch of AVR Trainer Board-100.

    Steps - 7 ( 0f 11 )

  • Pair the HC-05 Bluetooth Module with Android Mobile. Default PIN of HC-05 is 1234.

    Steps - 8 ( 0f 11 )

  • Open the Bluetooth Terminal App in the Mobile and Connect the HC-05 Bluetooth Module with it.

    Steps - 9 ( 0f 11 )

  • Reset the AVR Trainer Board-100 using its Reset switch.

    Steps - 10 ( 0f 11 )

  • See the output in the Bluetooth Terminal Window.

    Steps - 11 ( 0f 11 )

Downloads

HC-05 Bluetooth Module Interfacing with ATmega32
  • 187 downloads 209 Kb

Post a Comment

    • pankajlade
      can u send the code of above project
      2017-09-05 11:46:56
      Reply
      • Arun Kumar Garg

        The code is now available for download.

        2017-09-07 11:58:14
        Reply
        • ALTHAF
          Not getting the code file.
          2017-09-13 16:02:26
          Reply
          • Arun Kumar Garg

            Go to My downloads under My Account, there all your donloads are there.

            2017-09-13 19:01:28
            Reply
    • SagorSaha
      did you add any library file (ex. .c .h file ) in this project?
      2017-09-29 09:21:15
      Reply
      • Arun Kumar Garg

        no library file is added in the project

        2017-10-01 12:15:41
        Reply
    • SanjeevanSingha
      How to download it?
      2017-12-16 15:26:24
      Reply
      • Arun Kumar Garg

        Register in the website and then download the code. Then go to my download under your profile page. there u will find all your downloads.

        2017-12-16 15:45:22
        Reply