<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/rMoTqSC9wrY" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
In this tutorial you will design and build your own keyboard. You will also learn all the essentials to design and build any electronics. Enjoy!
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://github.com/FEDEVEL/custom-keyboard">Github (HW + 3D + SW)</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Tutorial - Custom DIY Keyboard Design and Build | Part 2: Keyboard Schematic

<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/N4cLFE0FF2U" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        In this tutorial you will design and build your own keyboard. You will also learn all the essentials to design and build any electronics. Enjoy!
    </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 tutorial about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:34</span><span class="chapters-text">Starting a new project</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:42</span><span class="chapters-text">Adding RP2040</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:43</span><span class="chapters-text">Adding 100nF</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:12</span><span class="chapters-text">Adding 2.2uF</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:14</span><span class="chapters-text">Adding 200R</span></li>
            <li class="chapters-list-item"><span class="chapters-time">25:43</span><span class="chapters-text">Adding 27R</span></li>
            <li class="chapters-list-item"><span class="chapters-time">27:40</span><span class="chapters-text">Adding USB-C connector</span></li>
            <li class="chapters-list-item"><span class="chapters-time">31:25</span><span class="chapters-text">Adding ESD protection</span></li>
            <li class="chapters-list-item"><span class="chapters-time">34:03</span><span class="chapters-text">Adding 1uF</span></li>
            <li class="chapters-list-item"><span class="chapters-time">36:10</span><span class="chapters-text">Connecting USB CC pins</span></li>
            <li class="chapters-list-item"><span class="chapters-time">36:46</span><span class="chapters-text">Adding 5.1k</span></li>
            <li class="chapters-list-item"><span class="chapters-time">38:21</span><span class="chapters-text">Voltage regulator 5V to 3V3</span></li>
            <li class="chapters-list-item"><span class="chapters-time">42:27</span><span class="chapters-text">Adding 47uF</span></li>
            <li class="chapters-list-item"><span class="chapters-time">45:49</span><span class="chapters-text">Crystal ABM8-272-T3</span></li>
            <li class="chapters-list-item"><span class="chapters-time">47:22</span><span class="chapters-text">Adding 1k</span></li>
            <li class="chapters-list-item"><span class="chapters-time">48:32</span><span class="chapters-text">Adding 15pF</span></li>
            <li class="chapters-list-item"><span class="chapters-time">49:48</span><span class="chapters-text">Adding 1M</span></li>
            <li class="chapters-list-item"><span class="chapters-time">52:52</span><span class="chapters-text">Flash W25Q128JVS</span></li>
            <li class="chapters-list-item"><span class="chapters-time">58:20</span><span class="chapters-text">Boot Select Button</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:01:09</span><span class="chapters-text">Adding 100k</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:03:10</span><span class="chapters-text">Reset Button</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:04:28</span><span class="chapters-text">Adding 10k</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:08:23</span><span class="chapters-text">Adding 1x3 Header</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:11:50</span><span class="chapters-text">User LED</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:15:06</span><span class="chapters-text">Power LED</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:16:38</span><span class="chapters-text">Thank you for watching</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://oshwlab.com/robertferanec/custom-keyboard">Finished project (EasyEDA)</a></li>
            <li class="links-list-item"><a href="https://github.com/FEDEVEL/custom-keyboard">Github (HW + 3D + SW)</a></li>
            <li class="links-list-item"><a href="https://www.thingiverse.com/thing:6784228">Thingiverse (3D)</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/playlist?list=PLXvLToQzgzdftro2qK5In8p6ExsDFdpzw">Link to the complete playlist</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Tutorial - Custom DIY Keyboard Design and Build: Schematic + PCB + Case | Part 1 - RP2040

<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/Lqc1jmbSxnE" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
Why is the thickness of PCB layers important? Explained.
    </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">00:36</span><span class="chapters-text">What is PCB stackup</span></li>
            <li class="chapters-list-item"><span class="chapters-time">01:08</span><span class="chapters-text">Is stackup important?</span></li>
            <li class="chapters-list-item"><span class="chapters-time">01:37</span><span class="chapters-text">Layer thickness vs. crosstalk</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:37</span><span class="chapters-text">Layer thickness vs. track width</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:11</span><span class="chapters-text">Layer count and order</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:44</span><span class="chapters-text">Conclusion</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>

How to choose 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/fkNa-FejWsQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Troubleshooting EMC problem can be done directly in your lab before going into an EMC test house. Practical example in this video – fixing Radiated Emission issue of a Flyback Power supply.
    </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">02:27</span><span class="chapters-text">EMC pre-compliance setup in your lab</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:14</span><span class="chapters-text">The first steps to try after seeing EMC problems</span></li>
            <li class="chapters-list-item"><span class="chapters-time">13:15</span><span class="chapters-text">Shorter cable and why it influences EMC results</span></li>
            <li class="chapters-list-item"><span class="chapters-time">18:44</span><span class="chapters-text">Adding a ferrite on the cable</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:32</span><span class="chapters-text">What causes radiation</span></li>
            <li class="chapters-list-item"><span class="chapters-time">27:18</span><span class="chapters-text">Flyback Converter / SMPS (Switching Mode Power Supply)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">29:26</span><span class="chapters-text">Using TEM Cell for EMC troubleshooting</span></li>
            <li class="chapters-list-item"><span class="chapters-time">33:04</span><span class="chapters-text">Benchmark test with TEM Cell</span></li>
            <li class="chapters-list-item"><span class="chapters-time">35:02</span><span class="chapters-text">Improving input capacitors</span></li>
            <li class="chapters-list-item"><span class="chapters-time">43:20</span><span class="chapters-text">Shielding transformer</span></li>
            <li class="chapters-list-item"><span class="chapters-time">46:24</span><span class="chapters-text">Adding Y-capacitors, low voltage capacitors</span></li>
            <li class="chapters-list-item"><span class="chapters-time">49:21</span><span class="chapters-text">Analyzing the power supply circuit</span></li>
            <li class="chapters-list-item"><span class="chapters-time">54:30</span><span class="chapters-text">Finally finding and fixing the source of the EMC problem</span></li>
            <li class="chapters-list-item"><span class="chapters-time">57:59</span><span class="chapters-text">THE BIG FIX</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:06:11</span><span class="chapters-text">Adding shield again, adding capacitors</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:12:13</span><span class="chapters-text">The results after the fix</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:13:09</span><span class="chapters-text">FIXED!</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/practical-emc-training-for-design-engineers">Practical EMC Training for Design Engineers</a></li>
            <li class="links-list-item"><a href="https://mach1design.co.uk/contact">Contact Min</a></li>
            <li class="links-list-item"><a href="https://mach1design.co.uk/led-radiated-emission-case-study">PDF presentation used in the video</a></li>
            <li class="links-list-item"><a href="https://mach1design.co.uk/">Min´s company website</a></li>
            <li class="links-list-item"><a href="https://emccompliance.co.uk/">More information</a></li>
        </ul>
    </div>   
</div>


Learn To Fix EMC Problem Easily And In Your Lab – Troubleshooting Radiated Emissions | Min Zhang

<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/8RbUSaZ9RGY" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Decimation filter basics theory, anti-aliasing filters, downsampling, and final implementation on an embedded system (STM32 microcontroller with sensor) using the C programming language.
    </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">01:40</span><span class="chapters-text">Previous Filtering Videos (FIR/IIR)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:03</span><span class="chapters-text">Basics</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:30</span><span class="chapters-text">Downsampling</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:01</span><span class="chapters-text">Anti-Aliasing Filter</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:58</span><span class="chapters-text">Non-Ideal Low-Pass Filter</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:59</span><span class="chapters-text">Decimation Filter</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:28</span><span class="chapters-text">Decimation Filter Design</span></li>
            <li class="chapters-list-item"><span class="chapters-time">09:24</span><span class="chapters-text">FIR Anti-Aliasing Filter Design</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:50</span><span class="chapters-text">Software Implementation (STM32)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">17:37</span><span class="chapters-text">Demonstration</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/watch?v=uNNNj9AZisM&ab_channel=Phil%E2%80%99sLab">FIR Filter Design and Software Implementation - Phil´s Lab #17</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/watch?v=QRMe02kzVkA&ab_channel=Phil%E2%80%99sLab">IIR Filters - Theory and Implementation (STM32) - Phil´s Lab #32</a></li>
            <li class="links-list-item"><a href="https://x-io.co.uk/serial-oscilloscope/">Serial Oscilloscope</a></li>

            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL courses</a></li>
        </ul>
    </div>  
</div>

Decimation Filters - Theory and Software Implementation - Phil's Lab #42

<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/D_asM2Lh_I0" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        You can build this magic wand by yourself. Watch my youtube step by step tutorial about how to design and build the electronics for the wand, download all the 3D files from Thingiverse and use the software from Github. All the files are free. You can build this wand even if you have never ever designed any electronics before. Enjoy!
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://fedevel.com/courses">Learn how to design electronics</a></li>
            <li class="links-list-item"><a href="https://www.thingiverse.com/thing:4927545">Download the files to 3D print this wand</a></li>
            <li class="links-list-item"><a href="https://oshwlab.com/robertferanec/myboard">Download and build the electronics</a></li>
            <li class="links-list-item"><a href="https://github.com/FEDEVEL/wand">Download the software</a></li>
            <li class="links-list-item"><a href="https://youtube.com/playlist?list=PLXvLToQzgzdea0sQXmpY8k4tfiXpkYIwO">Youtube Step by Step tutorial to design and build the electronics for this wand</a></li>
        </ul>
    </div>   
</div>


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Tutorial - Custom DIY Keyboard Design and Build | Part 2: Keyboard Schematic

Tutorial - Custom DIY Keyboard Design and Build: Schematic + PCB + Case | Part 1 - RP2040

How to choose PCB?

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