<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="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe src="https://www.youtube.com/embed/Rr9NBtrA4t4" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Watch how differential pair signals are travelling through a PCB. Thank you very much Yuriy Shlepnev 
    </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">00:33</span><span class="chapters-text">Differential pairs routed on top / bottom, THIN PCB, 1W</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:56</span><span class="chapters-text">3W, Top / Bottom</span></li>
            <li class="chapters-list-item"><span class="chapters-time">17:17</span><span class="chapters-text">THICK PCB, Top / Bottom</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:49</span><span class="chapters-text">No GND plane</span></li>
            <li class="chapters-list-item"><span class="chapters-time">30:01</span><span class="chapters-text">Differential pairs inside of PCB</span></li>
            <li class="chapters-list-item"><span class="chapters-time">45:30</span><span class="chapters-text">3D animation, top/bottom, 1W</span></li>
            <li class="chapters-list-item"><span class="chapters-time">48:51</span><span class="chapters-text">3D animation, top/bottom, 3W</span></li>
            <li class="chapters-list-item"><span class="chapters-time">57:12</span><span class="chapters-text">3D animation, inside of PCB, 1W</span></li>
            <li class="chapters-list-item"><span class="chapters-time">58:40</span><span class="chapters-text">3D animation, inside of PCB, 3W</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:06:21</span><span class="chapters-text">Crosstalk examples</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.linkedin.com/in/yuriy-shlepnev-7b39136/">Yuriy's LinkedIn</a></li>
            <li class="links-list-item"><a href="https://www.simberian.com/">Yuriy's company</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Watch Differential Pair Fields and Currents in PCB

<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/fEQyW0qQFjk" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        What is your best tip for board testing? What did you find very useful? Thank you Sean Hadley
    </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">Intro</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">07:20</span><span class="chapters-text">Test Jigs</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">10:34</span><span class="chapters-text">castellated edges</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">11:51</span><span class="chapters-text">what you need</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">12:44</span><span class="chapters-text">serial number</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">21:44</span><span class="chapters-text">schematics</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">23:02</span><span class="chapters-text">code examples</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">24:46</span><span class="chapters-text">entry level GUI</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">25:58</span><span class="chapters-text">placement of test points</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">28:28</span><span class="chapters-text">board holders</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">32:29</span><span class="chapters-text">clocks</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">34:22</span><span class="chapters-text">voltages</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">37:11</span><span class="chapters-text">test points</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">40:07</span><span class="chapters-text">dissolve pins</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">41:05</span><span class="chapters-text">language</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">43:14</span><span class="chapters-text">Python</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">50:43</span><span class="chapters-text">Making your own test</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">52:44</span><span class="chapters-text">Making your own plexiglass</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">54:19</span><span class="chapters-text">Making your own cradle</span>
            </li>
        </ul>
    </div> 
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.linkedin.com/in/sean-hadley-932149202/">Sean Hadley</a></li>
            <li class="links-list-item"><a href="https://www.magicdaq.com/">MagicDAQ</a></li>
            <li class="links-list-item"><a href="https://youtu.be/mVW83boEbE0?t=53">INGUN - Manual Test Fixture MA 260</a></li>
            <li class="links-list-item"><a href="https://learn.adafruit.com/how-to-build-a-testing-fixture/solder-pogo-pins">How to Build a Testing Jig</a></li>
            <li class="links-list-item"><a href="https://www.eevblog.com/forum/projects/tz2340-frequency-counter/">TZ2340 Frequency Counter test jig</a></li>
            <li class="links-list-item"><a href="https://www.javelin-tech.com/blog/2016/10/pogo-pins-3d-printed-fixtures/">Using Pogo Pins to Add Electrical Connectivity to Your 3D Printed Fixtures</a></li>
        </ul>
    </div>   
</div>


How To Create a Test For Your Boards – Everything essential you need to know (with Sean Hadley)

<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/_x2fzKEjUGQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        A Step by Step tutorial to help anyone to learn how to design and build a simple microcontroller board – even if you have never designed any boards before and you do not know much about electronics. This Part 1 is about how to draw a schematic for power and LED.
    </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">About this tutorial</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">03:20</span><span class="chapters-text">Starting a new project</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">05:36</span><span class="chapters-text">Choosing & Placing RGB LED</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">11:47</span><span class="chapters-text">Choosing & Placing Accelerometer</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">16:25</span><span class="chapters-text">Choosing & Placing Button</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">18:02</span><span class="chapters-text">Choosing & Placing Microcontroller</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">23:13</span><span class="chapters-text">Choosing & Placing Power supply</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">25:22</span><span class="chapters-text">Choosing & Placing 10uF capacitor</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">27:08</span><span class="chapters-text">Connecting Power supply</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">29:37</span><span class="chapters-text">Choosing & Placing Battery connector</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">31:51</span><span class="chapters-text">Adding micro USB circuit</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">42:25</span><span class="chapters-text">Choosing & Placing Diode</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">51:20</span><span class="chapters-text">Choosing & Placing Power LED</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">57:26</span><span class="chapters-text">How to calculate LED resistor</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">1:04:10</span><span class="chapters-text">Choosing & Placing MOSFET Transistor</span>
            </li>
        </ul>
    </div> 
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/D_asM2Lh_I0">Finished project where you can see how this board is used</a></li>
            <li class="links-list-item"><a href="https://oshwlab.com/robertferanec/myboard">Download the finished Schematic and PCB here</a></li>
            <li class="links-list-item"><a href="https://github.com/FEDEVEL/youtube-tiny-simple">Download the project source code from here</a></li>
            <li class="links-list-item"><a href="https://youtube.com/playlist?list=PLXvLToQzgzdea0sQXmpY8k4tfiXpkYIwO">Watch the full tutorial here</a></li>
        </ul>
    </div>   
</div>


Tutorial #1: How to Design and Build Your Own Board – Simply and Easily

<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/_x2fzKEjUGQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        What is your experience with a cheap assembly service? I am curious, maybe I just had a bad luck with this specific board?
    </div>
</div>


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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

Watch Differential Pair Fields and Currents in PCB

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