What is Burn Bootloader?
A Bootloader is a small program that resides in the microcontroller's memory and it allows you to upload sketches (programs) to your microcontroller.Burn Bootloader is a one-time job.You can utilize the full potential of Atmega8 By burning a bootloader onto Atmega8 microcontroller
ATmega8 Bootloader & Programmer board Built
Burning a bootloader and uploading a program to an ATmega8 involves a combination of hardware and software considerations. You can make your own Bootloader & Programmer board for for burn bootloader and upload code to ATmega8 .This board can made by using easily available components and it is very easy to build.
⇨28 Pin IC Base
⇨16 MHz Quartz Crystal
⇨Polyester Film Capacitor–22pF x 2,
⇨Male Headers
Components Required
⇨ATmega8 AVR Microcontroller IC⇨28 Pin IC Base
⇨16 MHz Quartz Crystal
⇨Polyester Film Capacitor–22pF x 2,
⇨Male Headers
Pin Configuration of ATmega8
Complete Circuit Diagram of ATmega8 Bootloader & Programmer
Click on the Download buttons to download the Circuit Diagram of Burn Bootloader and Upload Program in Atmega8
Circuit Explanation of Bootloader and Programmer Board
⇒A 16 MHz crystal oscillator and two capacitors(22Pf) used for provide an accurate clock source to Atmega8
⇒Connect the crystal between pins 9 and 10 of the ATmega8
⇒connect the capacitors between each crystal pin and ground.
⇒Connect VCC (pin 7 & 20) of the ATmega8 to 5V DC power supply.
⇒Connect GND (pin 8 & 22) of the ATmega8 to Ground
⇒Connect the programming header with the MISO, MOSI, SCK, RESET pins of ATmega8,this pins allows the programmer to connect to the USBasp or Arduino UNO.
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Burn Bootloader to Atmega8 microcontroller
Burning a bootloader and uploading a program to an ATmega8 microcontroller typically involves using an AVR programmer or Arduino Uno.Let's Burning a bootloader and uploading a program to an ATmega8 using Arduino UNO & Arduino IDE.Preparing Arduino Uno as ISP
Steps 1Arduino IDE Setup
Go to-https://www.arduino.cc/en/softwareDownload & Install Arduino IDE Software
Steps 2
Programming Arduino as an ISP (In-System-Programming)
To
burn a bootloader onto your Atmega8 microcontroller, you will need an
Arduino Uno board acting as an ISP (In-System Programmer). Connect the USB cable to the Arduino Uno's USB port and Connect the other end of the USB cable to the USB port of PC. Launch Arduino IDE Software and follow these steps to prepare Arduino UNO as an ISP. File>Examples>11.ArduinoISP>ArduinoISP
Tools>Board>Arduino AVR Boards>Arduino UNO
Tools>Port>Select COM Port
Tools>Programmer>AVRISP mkll
Click Upload
Done Uploading
Once the upload is complete, your Arduino Uno is ready to be used as an ISP.
Connect Bootloader & Programmer board with Arduino Uno Board for Burning Bootloader to Atmega8 microcontroller
Connect your Arduino Uno to your Atmega8 microcontroller as follows:
⇒Arduino Uno's 5V to Atmega8 VCC
⇒Arduino Uno's GND to Atmega8 GND
⇒Arduino Uno's Digital pin Pin 13 to Atmega8 SCK
⇒Arduino Uno's Digital pin Pin 12 to Atmega8 MISO
⇒Arduino Uno's Digital pin Pin 11 to Atmega8 MOSI
⇒Arduino Uno's Digital pin Pin 10 to Atmega8 RESET
Burning Bootloader to Atmega8 Using Arduino IDE
Burn Bootloader is a one-time Process.Burn the bootloader onto Atmega8 microcontroller using Arduino Uno acting as an ISP. Reconnect your Arduino Unowith Bootloader & Programmer board to your computer via USB.Launch the Arduino IDE and follow these steps to burn the bootloader onto Atmega8:
Tools>Board>Arduino AVR Boards>Arduino NG or older
Tools>Processor>ATmega8
Tools>Port>Select COM Port
Tools>Programmer>Arduino as ISP
Tools>Burn Bootloader
Wait for the burning process to complete.It may take some time.
Done Burning Bootloader
Once the burning process is finished, you have successfully burned the bootloader on your Atmega8 using your Arduino Uno.
Burn bootloader on Atmega8 using the USBasp programmer
⇒Connect the USBasp programmer to your Atmega8 microcontroller.⇒Launch the Arduino IDE and go to "Tools" > "Board" and select your Arduino board model.
⇒Go to "Tools" > "Processor" and select "Atmega8."
⇒Go to "Tools" > "Programmer" and select "USBasp."
⇒Click on "Tools" > "Burn Bootloader" to initiate the burning process. Wait for the process to complete.
Once the burning process is finished, you have successfully burned the bootloader on your Atmega8 using the USBasp programmer.
Uploading the Sketch to ATmega8 Using Arduino IDE
Congratulations! Now you can proceed to upload your programs to the Atmega8.Reconnect your Arduino Uno with Bootloader & Programmer board to your computer via USB.Open sketch file in Arduino IDE and follow these steps for Uploading the Sketch to ATmega8 microcontroller.Tools>Board>Arduino AVR Boards>Arduino NG or older
Tools>Processor>ATmega8
Tools>Port>Select COM Port
Tools>Programmer>Arduino as ISP
Sketch>Upload Using Programmer
Once the uploading process is finished, you have successfully upload the program on your Atmega8 . ATmega microcontroller is ready to use in any Arduino project.
Uploading a Program on your Atmega8 using USB-to-Serial converter or FTDI programmer
Connect ATmega8 with the hardware:⇒Connect the RX and TX pins of the ATmega8 to the TX and RX pins of the USB-to-Serial converter, respectively.
⇒Connect the ground and power (5V) pins of the ATmega8 to the as well.
Upload Program:
⇒Open sketch file in Arduino IDE.
⇒Select the correct board (ATmega8) and the appropriate COM port.
⇒Click the "Upload" button.
Step By Step Video Tutorial Of Burn Bootloader and Upload Program in Atmega8 project
With the right components,connections and configuration settings you can use ATmega microcontroller for a wide range of applications.So go ahead,grab your Atmega microcontroller start unlock the full potential of your Atmega and make exciting projects.
Frequently Asked Questions
How do I burn a bootloader into ATmega using Arduino as ISP?
Select the correct board (ATmega) and programmer (Arduino as ISP) in the Arduino IDE. Connect the Arduino to the ATmega, and then go to Tools -> Burn Bootloader.
What is the purpose of the crystal oscillator in the ATmega circuit?
The crystal oscillator provides an accurate clock source for the ATmega.
Can I use the internal oscillator instead of an external crystal?
Yes,the ATmega has an internal oscillator.Configure the Arduino IDE to reflect the internal oscillator setting during programming.
Can I use other AVR programmers instead of Arduino as ISP?
Yes,various AVR programmers like USBasp and AVRISP can be used. Adjust the programmer selection in the Arduino IDE accordingly.
What is the role of the USB-to-Serial converter in the programming process?
The USB-to-Serial converter (such as ATmega16U2 or CH340G) facilitates communication between the Arduino and the computer through the USB port.
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