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# eBoard ST-LINK Interface PCB for STM32 Programming & Debugging
The eBoard_STLINK_Interface repository provides a custom-designed PCB that acts as a flexible bridge between ST-LINK programmers and STM32-based projects. It supports multiple ST-LINK variants (e.g., V2, V3, clone models) and standardizes their pinouts, making it easy to connect any programmer to your target board without hassle.
Additionally, it integrates a USB-to-TTL adapter, allowing the same board to serve as both a programmer/debugger and a serial interface for microcontroller communication. This makes it an essential tool for embedded developers who frequently work with different MCUs and need a reliable, all-in-one interface solution.
This board is perfect for embedded developers who frequently switch between different ST-LINK programmers or need a compact, reliable interface for STM32 development and debugging.
### Port Connection Details:
Here is a breakdown of where to connect your devices:
**JTAG-20P Port**
* **Purpose:** A standard 20-pin ARM JTAG/SWD header compliant with ARM Cortex Debug Connector specification.
* **Supported Programmers/Debuggers:**
* **ULINK** series (ULINK2, ULINKplus, ULINKpro)
* **J-LINK** (Segger J-Link Base, EDU, Pro, Mini)
* **ST-LINK** (V2/V3 via JTAG/SWD adapter cables)
* Other ARM-compliant programmers and debug probes.
**ST-LINK V3 Port**
* This header is used to connect **ST-LINK V3 minie** programmers, including official STMicroelectronics models.
* Supports SWD (Serial Wire Debug) and SWO signals for debugging STM32 microcontrollers.
**ST-LINK V2 Port**
* Dedicated port for **ST-LINK V2** programmers (official or clone).
* Pinout is standardized to make connections easy without rewiring.
**CheapPRG Port**
* Universal pinout compatible with low-cost ST-LINK clone programmers.
**USB-to-TTL Interface**
* Integrated USB-to-TTL converter for UART communication with the target MCU.
* Can be used for serial debugging, bootloader programming, or logging.
* Supports **TXD** and **RXD** lines with selectable voltage levels (3.3 V via onboard regulator).
**STM8 Port**
* Special header for programming and debugging **STM8** series microcontrollers via SWIM (Single Wire Interface Module).
**UART Connectors (UART / BLUEPILL)**
* Additional UART headers to connect directly to development boards such as the STM32 Blue Pill.
* Useful for serial communication during development.
**Power Regulation (REG 3V3)**
* Onboard regulator provides a stable **3.3 V** supply for the connected devices.
* Can be used to power target boards directly from the interface.
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> [!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](https://youtu.be/zYiUItVFRqQ)
> Make sure to check it out!
</td>
<td width="360" valign="middle" style="padding: 0;">
<a href="https://youtu.be/zYiUItVFRqQ">
<img src="https://img.youtube.com/vi/zYiUItVFRqQ/maxresdefault.jpg"
width="360"
alt="aKaReZa 95 - Programming, Git - PART B Thumbnail"/>
</a>
</td>
</td>
</tr>
<tr>
<td valign="top">
> [!IMPORTANT]
> Begin your embedded systems journey with clarity and purpose. This episode outlines a structured roadmap for mastering microcontrollers, communication protocols, hardware design, and project development.
> Learn how to choose your specialization, follow curated playlists, and engage effectively with the community—ideal for learners seeking a scalable, goal-driven path into embedded engineering.
> [aKaReZa 124 – Embedded Systems Roadmap](https://youtu.be/3QYfv7A7aMc)
> Watch it now to kickstart your journey!
</td>
<td width="360" valign="middle" style="padding: 0;">
<a href="https://youtu.be/3QYfv7A7aMc">
<img src="https://img.youtube.com/vi/3QYfv7A7aMc/maxresdefault.jpg"
width="360"
alt="aKaReZa 124 – Embedded Systems Roadmap Thumbnail"/>
</a>
</td>
</tr>
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> [!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.
</td>
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# 🔗 Resources
Here you'll find a collection of useful links and videos related to the topic of AVR microcontrollers.
> [!TIP]
> The resources are detailed in the sections below.
> To access any of them, simply click on the corresponding blue link.
- [Altium Library](https://github.com/aKaReZa75/Altium-Library)
---
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.
- [PCB & Electronics Design Training](https://github.com/aKaReZa75/PCB)
---
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**.
- [Microcontroller Training](https://github.com/aKaReZa75/Microcontroller)
---
This repository offers a comprehensive guide to learning **various microcontrollers** and how to interface them with different shields. You’ll find tutorials on **using and configuring shields**, along with hands-on projects to help you **get your microcontrollers up and running**. Whether you're working with **Arduino, STM32, ESP32**, or others, this resource will help you understand how to integrate these platforms effectively for your projects.
## Project Videos
```plaintext
📁 eBoard Designs
└── [aKaReZa 123 - STLink Interface]
├─ Schematic — Designing a custom ST-Link board.
├─ Soldering — Techniques for SMD and THT components.
├─ Debuggers — ST-Link, J-Link, ULink setup in Keil.
├─ UART — USB-to-TTL converter usage.
└─ Comparison — Debugger features and practical tips.
```
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<a href="https://youtu.be/K9i31Nqotro">aKaReZa 123 – eBoard, STLink Interface</a>
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<p style="margin: 8px 0 0;">
Get a complete guide to designing and assembling an ST-Link interface board. This episode covers schematic creation, SMD/THT soldering, Keil IDE configuration for ST-Link, J-Link, and ULink debuggers, plus UART communication using a USB-to-TTL converter—perfect for building and debugging STM32 projects with professional-grade tools.
</p>
</td>
<td width="360" valign="top">
<a href="https://youtu.be/K9i31Nqotro">
<img src="https://img.youtube.com/vi/K9i31Nqotro/maxresdefault.jpg"
width="360"
alt="aKaReZa 123 – eBoard, STLink Interface Thumbnail"/>
</a>
</td>
</tr>
</table>
# 💻 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.
> [!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](https://git-scm.com/downloads).
> For a tutorial on how to install and use Git, check out [this video](https://youtu.be/BsykgHpmUt8).
- Once **Git Bash** is open, run the following command to clone the repository:
```bash
git clone https://github.com/aKaReZa75/eBoard_STLINK_Interface.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**.
- Then, press Enter to start the cloning operation and wait for the success message to appear.
> [!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.
2. Download the repository:
- Click the Code button to open a dropdown menu.
- Select Download ZIP from the menu.
3. Save the ZIP file:
- Choose a location on your computer to save the ZIP file and click Save.
4. 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.
5. 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.
2. Click on the **"New Issue"** button.
3. In the **Title** field, write a short summary of your issue or question.
4. 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.
5. Optionally, you can add **labels**, **type**, **projects**, or **milestones** to your issue for better categorization.
6. Click on the **"Submit new issue"** button to post your question or 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.
> 
> - 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](https://www.youtube.com/@aKaReZa75).
- Share this repository with others.
- Give this repository and my other repositories a star.
- Follow my [GitHub account](https://github.com/aKaReZa75).
# 📜 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:
- 📧 [Email: aKaReZa75@gmail.com](mailto:aKaReZa75@gmail.com)
- 🎥 [YouTube: @aKaReZa75](https://www.youtube.com/@aKaReZa75)
- 💼 [LinkedIn: @akareza75](https://www.linkedin.com/in/akareza75)
d64e40e00This file is pinned to the selected release. Download the original to open it in your design tool.