<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/-luLIJqURlY" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
I challenged a software engineer to design his very first PCB. What happened?
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Do you also make these mistakes in PCB Layout?

<div class="entry-content"><div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/YzBtfN1LQtM" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span></div><div class="blog-content"> I challenged a software engineer to design his very first PCB. What happened?</div><div class="blog-content-chapters"><div>Chapters:</div><ul class="chapters-list"><li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">The challenge</span></li><li class="chapters-list-item"><span class="chapters-time">01:01</span><span class="chapters-text">Schematic page</span></li><li class="chapters-list-item"><span class="chapters-time">03:46</span><span class="chapters-text">STM32</span></li><li class="chapters-list-item"><span class="chapters-time">10:18</span><span class="chapters-text">Power</span></li><li class="chapters-list-item"><span class="chapters-time">21:50</span><span class="chapters-text">Power LED</span></li><li class="chapters-list-item"><span class="chapters-time">23:29</span><span class="chapters-text">Boot and Reset</span></li><li class="chapters-list-item"><span class="chapters-time">27:47</span><span class="chapters-text">Crystal</span></li><li class="chapters-list-item"><span class="chapters-time">30:58</span><span class="chapters-text">USB</span></li><li class="chapters-list-item"><span class="chapters-time">33:59</span><span class="chapters-text">Arduino headers and User LED</span></li><li class="chapters-list-item"><span class="chapters-time">36:49</span><span class="chapters-text">SWI and UART connectors</span></li></div><div class="blog-content-links"><div>Links:</div><ul class="links-list"><li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li></ul></div></div>

Is this really how beginners design boards??? | Schematic Review

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/sKOUOU-hVEs" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
This video will help you to understand eye diagrams. Thank you very much Tim Wang Lee
    </div>

    <div class="blog-content-chapters">
        <div>
            Chapters:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">What is this video about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:17</span><span class="chapters-text">How eye diagram is created and why it´s useful</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:35</span><span class="chapters-text">How reflections influence eye diagram shape</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:17</span><span class="chapters-text">Simulating reflections and checking eye diagram</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:19</span><span class="chapters-text">How crosstalk influences eye diagram shape</span></li>
            <li class="chapters-list-item"><span class="chapters-time">30:36</span><span class="chapters-text">Simulating crosstalk and checking eye diagram</span></li>
            <li class="chapters-list-item"><span class="chapters-time">35:09</span><span class="chapters-text">How loss influences eye diagram shape</span></li>
            <li class="chapters-list-item"><span class="chapters-time">41:13</span><span class="chapters-text">Simulating loss and checking eye diagram</span></li>
            <li class="chapters-list-item"><span class="chapters-time">50:32</span><span class="chapters-text">Equalization explained</span></li>
            <li class="chapters-list-item"><span class="chapters-time">57:53</span><span class="chapters-text">CTLE Equalization</span></li>
            <li class="chapters-list-item"><span class="chapters-time">58:49</span><span class="chapters-text">FFE Equalization</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:02:19</span><span class="chapters-text">DFE Equalization</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.keysight.com/find/ads-si-workshop">Learn more about Signal Integrity with ADS</a></li>
            <li class="links-list-item"><a href="https://www.keysight.com/us/en/products/software/pathwave-design-software.html">Get a head start with Electronic Design Automation</a></li>
            <li class="links-list-item"><a href="https://www.linkedin.com/in/timwanglee/">Connect with Tim</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

What does an eye diagram show? Here is how you recognize problems - reflections, crosstalk and loss

<div class="entry-content">

    <div class="blog-content">
        I have updated FEDEVEL’s Directory structure by the following way:

        <ul class="content-list">
            <li class="content-list-item"><span class="content-text">Design Files directory – the files used during development. Regularly backed up and versioned.</span></li>
            <li class="content-list-item"><span class="content-text">Released Files directory – the files which were sent to production. Regularly backed up and versioned.</span></li>
            <li class="content-list-item"><span class="content-text">Work directory – the files which can be downloaded from Internet.</span></li>
        </ul>
    </div>

    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/1000e-fedevels-directory-structure-28-nov-2012.jpg" alt="Fedevels directory structure 28-NOV-2012" />
    </div>


    <div class="blog-content">
        <h2 class="blog-content-heading">For standard projects I use Google Drive. How?</h2>
        I have a server, where I run <a href="https://www.google.com/intl/en_US/drive/download/">Google Drive application</a>. This application does <b>backup and versioning</b> of everything located in Google Drive Directory – <b>automatically</b>. In this special Google Drive directory, I created Design Files directory and Released Files directory. These two directories are Shared & Mapped on company network (under R: and S: letter) and accessible from all FEDEVEL’s computers.<br><br>

        So, the design and released files are automatically backed up, versioned, accessible and located out of company in case of unpredicted disaster (lighting, flood, …). It’s simple to set up, very useful, requires no maintenance and costs only $3 a month. For special clients who requires confidentiality, I use my own backup server.<br><br>

        <i>Note: Each directory contains Read Me.txt file to explain what kind of files should be located there. It helps to keep your standards on same level for each project / person and make your documentation clear.</i><br><br>

        If you like the structure, you can use it for your new project too. Simply copy the directory from this template and rename it.<br><br>

        <b><a href="https://assets.fedevel.com/blog/downloads/FEDEVEL-Directory-Template-11-JAN-2013.zip">DOWNLOAD FEDEVEL’s Directory Structure Template HERE</a></b>
    </div>

    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.google.com/intl/en_US/drive/download/">Google Drive application</a></li>
            <li class="links-list-item"><a href="https://support.google.com/drive/answer/2375123?hl=en&p=mktg_pricing">Buy more Google storage</a></li>
            <li class="links-list-item"><a href="https://assets.fedevel.com/blog/downloads/FEDEVEL-Directory-Template-11-JAN-2013.zip">DOWNLOAD FEDEVEL’s Directory Structure Template HERE</a></li>
    </div>
</div>

HW Development Directory Structure and File Backup Setup

<div class="entry-content">

    <div class="blog-content">
        I highly recommend these tests. If there are any weak points in your design, these tests will find them. No errors yesterday. <br><br>

        I use the chamber to run boards in different temperatures (usually -40°C to +85°C). Most common errors are caused by failing crystals (crystal doesn’t start oscillating and the board doesn’t boot up in low temperatures) , failing memories (if there is a problem in your design, memory may start failing at certain temperature) or board is crashing in too high temperatures (some components go too hot and fail).
    </div>

    <div class="blog-content-text">
        <b>Tip: Always run the setup at your bench for couple of days first – just be sure there are no errors. Otherwise, you will not be sure if possible errors were caused by temperature change or your setup.</b><br><br>

        <i><u>About the picture:</u> Board is not visible (hidden in the right side of the chamber). You can see <a href="http://www.passmark.com/products/usb2loopback.htm">Passmark USB loopbacks</a> going out of the hole from the chamber + SSD hard drives + ATX power supply. VGA output from board is connected to the monitor. My laptop on the right – connected to the board via Ethernet.</i>
    </div>

    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/7854d-p1099524.jpg" alt="OLYMPUS DIGITAL CAMERA" />
    </div>

</div>

Testing in Environmental chamber

<div class="entry-content">

    <div class="blog-content">
        I use <a href="http://www.passmark.com/products/bit.htm">Passmark BurnIn</a> to test stability of my x86 designs. Here is a screenshot from my latest board while running this software.<br><br>

        <i>Click on the picture</i>
    </div>

    <div class="blog-content-img-wrapper">
        <a href="https://assets.fedevel.com/blog/2019/10/09f70-testing-x86-board.jpg"><img src="https://assets.fedevel.com/blog/2019/10/09f70-testing-x86-board.jpg" alt="Testing x86 board" /></a>
    </div>

    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.passmark.com/products/bit.htm">Passmark BurnIn</a></li>
    </div>
</div>

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Testing and Burning x86 Boards

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Do you also make these mistakes in PCB Layout?

Is this really how beginners design boards??? | Schematic Review

What does an eye diagram show? Here is how you recognize problems - reflections, crosstalk and loss

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