<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="blog-content">
        During PCB layout, you have to decide on clearance between traces. Here are 3 key factors you may need to consider:
    </div>
    <div class="blog-content">
        <h2 class="blog-content-heading">Manufacturing capabilities</h2>
        Check with your PCB manufacturer, what is the minimum gap they can actually manufacture. Many PCB manufacturers have it on their website, as an example check this <a href="http://www.sqpinternational.com/capabilities.php">SQP International</a>. Note: <i>Normally I do not use clearance smaller than 0.1mm (4mil)</i>.
    </div>
    <div class="blog-content">
        <h2 class="blog-content-heading">Signal requirements</h2>
        For critical signals, you may want to use a bigger clearance as is the minimum manufacturing gap. One of the main factors to consider is crosstalk (as you know, signals routed close to each other can influence each other). If you are not sure how big the gap should be, you can use a Crosstalk calculator e.g. download <a href="http://www.saturnpcb.com/pcb_toolkit.htm">Saturn PCB Toolkit</a> -> Crosstalk Calculator TAB. For critical signals you may be looking to achieve crosstalk coeficient -30dB or lower ( e.g -35dB, -40dB, …. see the Table in the next paragraph).<br><br>

        <i>Picture: Screenshot from Saturn PCB Toolkit -> Crosstalk Calculator TAB</i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/b796c-saturn-pcb-toolkit-crosstalk-calculator-tab.png" alt="Saturn PCB Toolkit - Crosstalk Calculator TAB" />
    </div>
    <div class="blog-content-text">
        The table below shows some examples of recommended spacing based on H, where H is dielectricum height between signal layer and reference plane (notice the crosstalk coeficient which in these examples is between -22dB to -35dB):<br><br>

        <i>Table: Examples of recommended spacing between tracks</i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/05482-examples-of-gap-between-tracks-in-pcb-design.png" alt="Examples of gap between tracks in PCB design" />
    </div>
    <div class="blog-content-text">
        Have a look also at <a href="https://fedevel.com/blog/high-speed-pcb-design-rules-lesson-4-of-advanced-pcb-layout/">High Speed PCB Design Rules (Lesson 4 of Advanced PCB Layout)</a> post – especially the <i>Rule 6: Be aware of tracks running in parallel.</i> That may help you.
    </div>
    <div class="blog-content">
        <h2 class="blog-content-heading">Electrical requirements</h2>
        If you are designing a board for higher voltage (e.g. 240V), the minimum gap can be calculated and has to follow some rules or meet some requirements. As a good starting point, you can use <a href="http://www.saturnpcb.com/pcb_toolkit.htm">Saturn PCB Toolkit</a> -> Conductor Spacing TAB. However, it may be more complicated. You may need to consider other factors, for example the environment where the board will be located and also read and study some regulations.<br><br>

        <i>Picture: Screenshot from Saturn PCB Toolkit -> Conductor Spacing TAB</i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/3db16-satrun-pcb-toolkit-conductor-spacing-tab.png" alt="Saturn PCB Toolkit - Conductor Spacing TAB" />
    </div>

    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.sqpinternational.com/capabilities.php">SQP International</a></li>
            <li class="links-list-item"><a href="http://www.saturnpcb.com/pcb_toolkit.htm">Saturn PCB Toolkit</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/blog/high-speed-pcb-design-rules-lesson-4-of-advanced-pcb-layout/">High Speed PCB Design Rules (Lesson 4 of Advanced PCB Layout)</a></li>
        </ul>
    </div>

How to decide on Minimum Gap / Clearance 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/XorSXQhP42w" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Have you ever wondered what does it mean when you read or hear about Object programming? What is the big deal about it? This video will help you to understand more.
    </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">00:16</span><span class="chapters-text">Javascript</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">00:59</span><span class="chapters-text">Canvas</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">01:45</span><span class="chapters-text">Moving Objects</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">02:37</span><span class="chapters-text">Moving Objects Up</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">04:24</span><span class="chapters-text">Creating New Objects</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">05:35</span><span class="chapters-text">Drawing Creatures</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">06:43</span><span class="chapters-text">What if</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">08:18</span><span class="chapters-text">Creature</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">10:15</span><span class="chapters-text">Creature Up</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">12:12</span><span class="chapters-text">Creatures</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">14:22</span><span class="chapters-text">Parameter Functions</span>
            </li>
        </ul>
    </div> 
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.imx6rex.com/open-rex/">The final code from the video</a></li>
            <li class="links-list-item"><a href="http://www.w3schools.com/html/tryit.asp?filename=tryhtml_basic">To run the code, COPY & PASTE it into “TRY IT”</a></li>
        </ul>
    </div>  
</div>


Why & How we use Objects in Programming (Javascript Example)

<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/6i4LeVzQqLk" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        If you would like to see how your PCB board would look in an enclosure or in a box, it’s very easy to do. This is a simple DesignSpark tutorial about creating a box around PCB.
    </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">01:02</span><span class="chapters-text">Javascript</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">01:56</span><span class="chapters-text">Canvas</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">03:11</span><span class="chapters-text">Moving Objects</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">04:15</span><span class="chapters-text">Moving Objects Up</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">07:18</span><span class="chapters-text">Creating New Objects</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">08:02</span><span class="chapters-text">Drawing Creatures</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">14:49</span><span class="chapters-text">What if</span>
            </li>
        </ul>
    </div> 
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.fedevel.com/welldoneblog/wp-content/uploads/2015/11/Our-BOX.pdf">3D PDF</a></li>
            <li class="links-list-item"><a href="http://www.imx6rex.com/rex-uploads/OpenRex_V1I1_PCB.step">3D PCB model</a></li>
            <li class="links-list-item"><a href="http://www.imx6rex.com/rex-uploads/Our_BOX.rsdoc">DesignSpark Project</a></li>
            <li class="links-list-item"><a href="http://www.rs-online.com/designspark/electronics/eng/page/mechanical">DesignSpark software</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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