<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/H7i2YXUBheE" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Overview of how to design an STM32-based PCB including various peripherals (SD card, USB) and some sensors (IMU and barometric pressure sensor). Including information on how to order these PCBs fully-assembled from JLCPCB.<br><br>This board will be used in future videos on signal processing, STM32 firmware, and more - and is an upgrade on the original ´LittleBrain´ PCB.<br><br>Hardware designed using Altium Designer.
    </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">Introduction</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:21</span><span class="chapters-text">LittleBrain++ (LittleBrain PCB Update)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">01:45</span><span class="chapters-text">Schematic Overview</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:04</span><span class="chapters-text">Power Supply Schematic</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:20</span><span class="chapters-text">STM32 Microcontroller</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:25</span><span class="chapters-text">Pin Assignment with STM32CubeIDE</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:15</span><span class="chapters-text">Serial Wire Debug (SWD)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:55</span><span class="chapters-text">USB</span></li>
            <li class="chapters-list-item"><span class="chapters-time">09:05</span><span class="chapters-text">SD Card</span></li>
            <li class="chapters-list-item"><span class="chapters-time">09:39</span><span class="chapters-text">GPIO Header</span></li>
            <li class="chapters-list-item"><span class="chapters-time">09:58</span><span class="chapters-text">Sensors (IMU and Pressure Sensor)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">11:26</span><span class="chapters-text">PCB Overview</span></li>
            <li class="chapters-list-item"><span class="chapters-time">11:52</span><span class="chapters-text">Layer Stackup and Impedances</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:51</span><span class="chapters-text">Power Supply Layout and Routing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">13:22</span><span class="chapters-text">STM32 Layout and Routing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:09</span><span class="chapters-text">SDIO and USB Interfaces</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:34</span><span class="chapters-text">Sensors Layout and Routing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:56</span><span class="chapters-text">Ground and Stitching Vias</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:29</span><span class="chapters-text">Silkscreen</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:38</span><span class="chapters-text">Design Rule Check, Gerber and Assembly Files</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:33</span><span class="chapters-text">Ordering at JLCPCB</span></li>
        </ul>
    </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 courses</a></li>
        </ul>
    </div>  
</div>

Altium STM32 Hardware Design - An Overview in Under 20 Minutes - Phil's Lab #38

<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/4Jp0mEdlXe4" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Even if you have access to a simulation software, sometimes it’s super difficult to setup memory simulation. I hope this video helps.
    </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 this video is about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:22</span><span class="chapters-text">Importing board into PathWave</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:16</span><span class="chapters-text">Setting up stackup</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:15</span><span class="chapters-text">Setting up LPDDR4 simulation in SIPro (RapidScan, DDR Wizard )</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:13</span><span class="chapters-text">S-Parameters, Skew results, Sub-Circuit</span></li>
            <li class="chapters-list-item"><span class="chapters-time">25:00</span><span class="chapters-text">Setting up the simulation in Memory Designer schematic</span></li>
            <li class="chapters-list-item"><span class="chapters-time">39:48</span><span class="chapters-text">Viewing the results from memory simulation</span></li>
            <li class="chapters-list-item"><span class="chapters-time">44:39</span><span class="chapters-text">What to do when getting some weird results from the simulation</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/vandanawylde/">Vandana Wylde LinkedIn</a></li>
            <li class="links-list-item"><a href="https://www.voipac.com/">VOIPAC</a></li>
            <li class="links-list-item"><a href="https://welldoneblogfedevel.files.wordpress.com/2021/11/im8xm-lpddr4-board-analysis-slides.pdf">Slides</a></li>
        </ul>
    </div>   
</div>


Setting Up DDR4 Memory Simulation | ADS | with Vandana Wylde

<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/MKcpth_NuJQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        See how a stitching VIA can help to control return current path when a track is changing reference layers.
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/nPx2iqmVAHY">How GND VIAs Improve Your PCB Layout</a></li>
        </ul>
    </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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