<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/whK0rBc4UBQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        About how a PCIE is implemented inside of FPGA. A highlight from my video with Adam Taylor
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/C-RtLnagFuQ">Full interview with Adam</a></li>
        </ul>
    </div>   
</div>


How to add PCIE to FPGA – Just to give you an idea how it is done | Adam Taylor | #HighlightsRF

<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/q_Anc8KyrXI" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Audio noise gate theory and real-time implementation on an STM32 microcontroller in C. Basic (threshold) vs advanced noise gate (threshold + attack + release + hold), analysis in time domain, tests using Digilent ADP3450 to see influence of noise gate parameters on signals. Live guitar demos.
    </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">Guitar Demo</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:18</span><span class="chapters-text">Introduction</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:23</span><span class="chapters-text">Noise Gate Theory</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:55</span><span class="chapters-text">Basic Noise Gate Implementation (STM32CubeIDE)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:54</span><span class="chapters-text">Basic Noise Gate Live Tests (Digilent Waveforms)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:27</span><span class="chapters-text">Basic Noise Gate Guitar Demo</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:38</span><span class="chapters-text">Noise Gate Improvements (Advanced Noise Gate)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">13:00</span><span class="chapters-text">Advanced Noise Gate Implementation (STM32CubeIDE)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">18:37</span><span class="chapters-text">Advanced Noise Gate Live Tests (Digilent Waveforms)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">21:05</span><span class="chapters-text">Advanced Noise Gate Guitar Demo</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.youtube.com/playlist?list=PLXSyc11qLa1ZCn0JCnaaXOWN6Z46rK9jd">DSP Playlist</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/playlist?list=PLXSyc11qLa1a4Tqbz228dPZfMrs-KRpzA">STM32 Firmware Playlist</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/watch?v=VDhmVrbSpqA&ab_channel=Phil%E2%80%99sLab">Digital Audio Processing with STM32 #1 - Introduction and Filters - Phil´s Lab #46</a></li>
            <li class="links-list-item"><a href="https://www.mathworks.com/help/audio/ref/noisegate-system-object.html">Matlab article</a></li>
            <li class="links-list-item"><a href="https://www.eecs.qmul.ac.uk/~josh/documents/2012/GiannoulisMassbergReiss-dynamicrangecompression-JAES2012.pdf">Dynamic range gate paper</a></li>
            <li class="links-list-item"><a href="https://digilent.com/shop/analog-discovery-pro-3000-series-portable-high-resolution-mixed-signal-oscilloscopes/">Digilent ADP3450</a></li>


            <li class="links-list-item"><a href="https://fedevel.com/courses/mixed-signal-hardware-design-with-kicad">Mixed-signal Hardware Design course</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL courses</a></li>
        </ul>
    </div>  
</div>

Noise Gate - DSP with STM32 - Phil's Lab #58

<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/vFK68yFg4k8" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Today I am building an eye as a proof of concept. It works!
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.creality.com/products/ender-3-v2-3d-printer-csco">My 3d printer is Creality ENDER 3 V2</a></li>
            <li class="links-list-item"><a href="https://www.autodesk.com/products/fusion-360/personal">I used Fusion 360 CAD software with personal free license</a></li>
            <li class="links-list-item"><a href="https://www.horizonhobby.com/product/dx6i-6-channel-dsmx-transmitter-with-ar610-receiver-mode-2/SPM6630.html">Spectrum DX6i transmitter</a></li>
            <li class="links-list-item"><a href="https://www.horizonhobby.com/product/ar620-dsmx-6-channel-sport-receiver/SPMAR620.html">Spektrum AR620 receiver</a></li>
            <li class="links-list-item"><a href="https://www.kavanrc.com/en/item/go-09-servo-9g-140704">GO-09 Servo motors</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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