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ATMEGA328 Board

This repository involves designing, assembling, and testing an educational header board for the ATMEGA328 AVR microcontroller, compatible with the Arduino UNO.

ATMEGA328 Shield

ATmega328 Pin Mapping Table

Arduino Pin ATmega328 Pin Functionality
Analog Pin A0 PC0 (PORTC, PIN0) ADC0
Analog Pin A1 PC1 (PORTC, PIN1) ADC1
Analog Pin A2 PC2 (PORTC, PIN2) ADC2
Analog Pin A3 PC3 (PORTC, PIN3) ADC3
Analog Pin A4 PC4 (PORTC, PIN4) I2C (SDA) / ADC4
Analog Pin A5 PC5 (PORTC, PIN5) I2C (SCL) / ADC5
Digital Pin D0 PD0 (PORTD, PIN0) USART (RXD)
Digital Pin D1 PD1 (PORTD, PIN1) USART (TXD)
Digital Pin D2 PD2 (PORTD, PIN2) External Interrupt (INT0)
Digital Pin D3 PD3 (PORTD, PIN3) External Interrupt (INT1) / PWM (OC2B)
Digital Pin D4 PD4 (PORTD, PIN4) Timer/Counter (XCK/T0)
Digital Pin D5 PD5 (PORTD, PIN5) PWM (OC0B) / Timer1
Digital Pin D6 PD6 (PORTD, PIN6) PWM (OC0A) / Analog Comparator
Digital Pin D7 PD7 (PORTD, PIN7) Analog Comparator Input
Digital Pin D8 PB0 (PORTB, PIN0) ICP1 / Clock Output (CLKO)
Digital Pin D9 PB1 (PORTB, PIN1) PWM (OC1A)
Digital Pin D10 PB2 (PORTB, PIN2) PWM (OC1B) / SPI (SS)
Digital Pin D11 PB3 (PORTB, PIN3) PWM (OC2A) / SPI (MOSI)
Digital Pin D12 PB4 (PORTB, PIN4) SPI (MISO)
Digital Pin D13 PB5 (PORTB, PIN5) SPI (SCK) / LED_BUILTIN

Tip

If you're looking to better understand how to navigate and use my GitHub repositories — including exploring their structure, downloading or cloning projects, submitting issues, and asking questions,
everything you need is clearly explained in this video:
aKaReZa 95 - Programming, Git - PART B
Make sure to check it out!

aKaReZa 95 - Programming, Git - PART B Thumbnail

Caution

It is absolutely critical that you carefully read every single word of this document, line by line, to ensure you don't miss any details. Nothing can be overlooked.

Detailed Description

Aspect Description
PCB Design Software Altium V24.2.2
PCB Layers 2-Layer FR4
Microcontroller ATMEGA328
Pin Type Arduino UNO
Converter IC CH340
USB Port TYPE-C

Resources

  • All PCB designs across all repositories and projects are built using this Altium Designer component library. It contains a wide range of verified footprints, schematic symbols, and 3D models, ensuring consistency and accuracy in PCB designs. If you're working on a new PCB, using this library will save you time and minimize errors.

  • This repository is dedicated to learning PCB design and electronics from scratch. It covers everything from circuit theory to practical PCB layout techniques, including routing strategies, best practices, and component placement. Whether you're a beginner or an experienced designer, this resource will help you improve your PCB design skills and create professional-quality boards.

  • This repository provides a comprehensive guide to AVR microcontroller programming, covering everything from the fundamentals to advanced firmware development. Learn about AVR architecture, peripheral interfacing, timers, interrupts, communication protocols, and more through hands-on projects and real-world examples. Whether you're just starting or looking to refine your embedded programming skills, this resource will help you master AVR development.

  • This document provides links to trusted suppliers where you can purchase all the essential components for this project, ensuring quality and reliability.

Project Videos

This video is the first in a new series called eBoard, which stands for Educational Boards. In this video, we design the schematic for an educational header board specifically for the ATMEGA328 microcontroller used in the channel's tutorials.

aKaReZa 74 – eBoard, ATMEGA328 - PART A Thumbnail

In this video, we fix a few issues in the schematic, upgrade and change several sections, and then transfer all components to the PCB. We arrange the components and prepare them for routing.

aKaReZa 76 – eBoard, ATMEGA328 - PART B Thumbnail

In this video, we complete the routing for the ATMEGA328 educational board and get familiar with related tips.

aKaReZa 88 – eBoard, ATMEGA328 - PART C Thumbnail

Step-by-step soldering of an ATMEGA328-based board, covering power input, voltage regulators (12V, 5V, 3.3V), microcontroller placement, USB Type-C port installation, CH340 for USB-to-UART conversion, final connections, bootloader programming, and full board testing to ensure proper functionality.

aKaReZa 102 – Repair, ATMEGA328 Soldering Thumbnail

💻 How to Use Git and GitHub

To access the repository files and save them on your computer, there are two methods available:

  1. Using Git Bash and Cloning the Repository

    • This method is more suitable for advanced users and those familiar with command-line tools.
    • By using this method, you can easily receive updates for the repository.
  2. Downloading the Repository as a ZIP file

    • This method is simpler and suitable for users who are not comfortable with command-line tools.
    • Note that with this method, you will not automatically receive updates for the repository and will need to manually download any new updates.

Clone using the URL.

First, open Git Bash :

  • Open the folder in File Explorer where you want the library to be stored.
  • Right-click inside the folder and select the option "Open Git Bash here" to open Git Bash in that directory.

open Git Bash

Note

If you do not see the "Open Git Bash here" option, it means that Git is not installed on your system.
You can download and install Git from this link.
For a tutorial on how to install and use Git, check out this video.

  • Once Git Bash is open, run the following command to clone the repository:
git clone https://github.com/aKaReZa75/eBoard_ATMEGA328.git
  • You can copy the above command by either:
  • Clicking on the Copy button on the right of the command.
  • Or select the command text manually and press Ctrl + C to copy.
  • To paste the command into your Git Bash terminal, use Shift + Insert.

Clone the Repository

  • Then, press Enter to start the cloning operation and wait for the success message to appear.

Open the Library File

Important

Please keep in mind that the numbers displayed in the image might vary when you perform the same actions.
This is because repositories are continuously being updated and expanded. Nevertheless, the overall process remains unchanged.

Note

Advantage of Cloning the Repository:

  • Receiving Updates: By cloning the repository, you can easily and automatically receive new updates.
  • Version Control: Using Git allows you to track changes and revert to previous versions.
  • Team Collaboration: If you are working on a project with a team, you can easily sync changes from team members and collaborate more efficiently.

Download Zip

If you prefer not to use Git Bash or the command line, you can download the repository directly from GitHub as a ZIP file.
Follow these steps:

  1. Navigate to the GitHub repository page and Locate the Code button:
  • On the main page of the repository, you will see a green Code button near the top right corner.
  1. Download the repository:
  • Click the Code button to open a dropdown menu.

  • Select Download ZIP from the menu.

    Download Zip

  1. Save the ZIP file:
  • Choose a location on your computer to save the ZIP file and click Save.
  1. Extract the ZIP file:
  • Navigate to the folder where you saved the ZIP file.
  • Right-click on the ZIP file and select Extract All... (Windows) or use your preferred extraction tool.
  • Choose a destination folder and extract the contents.
  1. Access the repository:
  • Once extracted, you can access the repository files in the destination folder.

Important

  • No Updates: Keep in mind that downloading the repository as a ZIP file does not allow you to receive updates.
    If the repository is updated, you will need to download it again manually.
  • Ease of Use: This method is simpler and suitable for users who are not comfortable with Git or command-line tools.

📝 How to Ask Questions

If you have any questions or issues, you can raise them through the "Issues" section of this repository. Here's how you can do it:

  1. Navigate to the "Issues" tab at the top of the repository page.

Issues

  1. Click on the "New Issue" button.

New Issue

  1. In the Title field, write a short summary of your issue or question.

  2. In the "Description" field, detail your question or issue as thoroughly as possible. You can use text formatting, attach files, and assign the issue to someone if needed. You can also use text formatting (like bullet points or code snippets) for better readability.

  3. Optionally, you can add labels, type, projects, or milestones to your issue for better categorization.

  4. Click on the "Submit new issue" button to post your question or issue.

Submeet New Issue

I will review and respond to your issue as soon as possible. Your participation helps improve the repository for everyone!

Tip

  • Before creating a new issue, please check the "Closed" section to see if your question has already been answered.
    Closed section
  • Write your question clearly and respectfully to ensure a faster and better response.
  • While the examples provided above are in English, feel free to ask your questions in Persian (فارسی) as well.
  • There is no difference in how they will be handled!

Note

Pages and interfaces may change over time, but the steps to create an issue generally remain the same.

🤝 Contributing to the Repository

To contribute to this repository, please follow these steps:

  1. Fork the Repository
  2. Clone the Forked Repository
  3. Create a New Branch
  4. Make Your Changes
  5. Commit Your Changes
  6. Push Your Changes to Your Forked Repository
  7. Submit a Pull Request (PR)

Note

Please ensure your pull request includes a clear description of the changes you’ve made. Once submitted, I will review your contribution and provide feedback if necessary.

🌟 Support Me

If you found this repository useful:

  • Subscribe to my YouTube Channel.
  • Share this repository with others.
  • Give this repository and my other repositories a star.
  • Follow my GitHub account.

📜 License

This project is licensed under the GPL-3.0 License. This license grants you the freedom to use, modify, and distribute the project as long as you:

  • Credit the original authors: Give proper attribution to the original creators.
  • Disclose source code: If you distribute a modified version, you must make the source code available under the same GPL license.
  • Maintain the same license: When you distribute derivative works, they must be licensed under the GPL-3.0 too.
  • Feel free to use it in your projects, but make sure to comply with the terms of this license.

✉️ Contact Me

Feel free to reach out to me through any of the following platforms: