<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-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/OG2Ci_xr0pM" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
If you would like to watch a full step-by-step tutorial about how to design your own custom keyboard, let me know in comments. Thx for watching.
    </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">Overview</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:20</span><span class="chapters-text">Keyboard parts</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:54</span><span class="chapters-text">Keyboard PCB design</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:35</span><span class="chapters-text">Small version</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:53</span><span class="chapters-text">Keyboard case</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:11</span><span class="chapters-text">Switches and encoders</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:10</span><span class="chapters-text">Keycaps</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:56</span><span class="chapters-text">Firmware QMK</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:52</span><span class="chapters-text">VIA app to set shortcuts</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:28</span><span class="chapters-text">Finished keyboard</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>

I Built This Custom Keyboard from Scratch

<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/m3Ny3j5nH0U" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
Close look at BGA soldering, chip soldering, hand soldering and 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">What is this video about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:09</span><span class="chapters-text">Soldering BGA</span></li>
            <li class="chapters-list-item"><span class="chapters-time">01:18</span><span class="chapters-text">Soldering TSSOP</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:05</span><span class="chapters-text">Soldering QFN</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:02</span><span class="chapters-text">Hand soldering</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:35</span><span class="chapters-text">Multilayer PCB under a microscope</span></li>
    </div>

    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.keyence.eu/yt-kib-vhx-0924">Microscope Keyence VHX-7000N</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Have you ever seen soldering THIS close?

<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/I6N_mphgKiY" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        This video has been taken when I was doing DDR2 layout using Altium Designer. I usually use Cadence Allegro and I had to improvise a little bit this time.
    </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/2010/11/ddr2-length-calculator-spreadsheet-used-for-altium-designer/">Spreadsheet what I used during the layout</a></li>
            <li class="links-list-item"><a href="http://www.fedevel.com/welldoneblog/2011/07/altium-designer-ddr3-routing-and-pcb-layout-video/">Altium Designer – DDR3 routing and PCB layout video</a></li>
            <li class="links-list-item"><a href="http://www.fedevel.com/welldoneblog/2011/12/altium-designer-ddr2-ddr3-length-matching/">Altium Designer – DDR2 / DDR3 length matching</a></li>
        </ul>
    </div>  
</div>


Altium Designer – DDR2 routing and layout video

<div class="entry-content">

    <div class="blog-content">
        DDR, DDR2 and DDR3 memory reference layouts can be found on <a href="http://www.jedec.org/standards-documents/technology-focus-areas/memory-module-design-file-registrations">JEDEC website</a>. They provide schematics and PCB brd files (requires registration). It’s very useful to see how JEDEC does the layout.
    </div>

    <div class="blog-content-text">
        For example see difference in address routing (yellow colour) for DDR2 (T-branch topology) and DDR3 (fly-by topology) :
        <ul class="content-list">
            <li class="content-list-item"><span class="content-text"><b><a href="https://www.jedec.org/standards-documents/focus/memory-module-designs-dimms/DDR2/240-pin Unbuffered DIMMs">Design Files for DDR2 240-pin Unbuffered DIMMs</a></b>
        </ul>       
    </div>
    
    <div class="blog-content-text">
        <i>Picture: <a href="http://www.jedec.org/sites/default/files/docs/design/DDR2/PC2-6400_UDIMM_V12_RC_H0_20050803.zip">DDR2 2 Rank x16 example</a></i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/0dcbd-ddr2-layout-example.jpg" alt="DDR2 layout example" />
    </div>

    <div class="blog-content-text">
        <ul class="content-list">
            <li class="content-list-item"><span class="content-text"><b><a href="http://www.jedec.org/standards-documents/focus/memory-module-designs-dimms/DDR3/240-pin Unbuffered DIMMs">Design Files for DDR3 240-pin Unbuffered DIMMs</a></b>
        </ul>       
    </div>
    
    <div class="blog-content-text">
        <i>Picture: <a href="http://www.jedec.org/sites/default/files/docs/design/DDR3/PC3_10600_UDIMM_V050_RC_F0_20070530.zip">DDR3 2 Rank x16 planar example</a></i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/ea62b-ddr3-layout-example.jpg" alt="DDR3 layout example" />
    </div>

    <div class="blog-content-text">
        You will need <a href="http://www.cadence.com/products/pcb/Pages/downloads.aspx">Allegro FREE Physical Viewer</a> (free, but requires registration) to open the brd files. In case you have never used Allegro before, you may want to watch <a href="https://fedevel.com/blog/very-simple-tutorial-how-to-start-with-cadence-allegro/">Very simple tutorial – How to start with Cadence Allegro</a>.
    </div>

    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.jedec.org/standards-documents/technology-focus-areas/memory-module-design-file-registrations">JEDEC website</a></li>
            <li class="links-list-item"><a href="http://www.jedec.org/standards-documents/focus/memory-module-designs-dimms/DDR3/240-pin Unbuffered DIMMs">Design Files for DDR3 240-pin Unbuffered DIMMs</a></li>
            <li class="links-list-item"><a href="http://www.jedec.org/sites/default/files/docs/design/DDR2/PC2-6400_UDIMM_V12_RC_H0_20050803.zip">DDR2 2 Rank x16 example</a></li>
            <li class="links-list-item"><a href="http://www.jedec.org/standards-documents/focus/memory-module-designs-dimms/DDR3/240-pin Unbuffered DIMMs">Design Files for DDR3 240-pin Unbuffered DIMMs</a></li>
            <li class="links-list-item"><a href="http://www.jedec.org/sites/default/files/docs/design/DDR3/PC3_10600_UDIMM_V050_RC_F0_20070530.zip">DDR3 2 Rank x16 planar example</a></li>
            <li class="links-list-item"><a href="http://www.cadence.com/products/pcb/Pages/downloads.aspx">Allegro FREE Physical Viewer</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/blog/very-simple-tutorial-how-to-start-with-cadence-allegro/">Very simple tutorial – How to start with Cadence Allegro</a></li>
        </ul>
    </div>  
</div>

DDR, DDR2 and DDR3 – PCB layout examples

<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/kPv3-zWlzms" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        How to print assembly drawing or selected layers only? I believe, you will find this video useful.
    </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/2011/06/altium-designer-how-to-creat-assembly-drawing-layers/">Altium Designer – How to Create Assembly Drawing Layers</a></li>
        </ul>
    </div>  
</div>


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