<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/VGY1qFE-kC0" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
I come up with this a long time ago and keep using it all the time.
    </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>

Useful TIP: What Track Width To Use When Routing 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/gHC7uZBigmQ" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
I asked AI to write software for my board. This is 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">What is this video about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:52</span><span class="chapters-text">Uploading board info to AI</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:02</span><span class="chapters-text">Generating test code</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:35</span><span class="chapters-text">Generating the basic CLOCK code</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:06</span><span class="chapters-text">Generating code for Timer feature</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:49</span><span class="chapters-text">Generating code for Stopwatch feature</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:16</span><span class="chapters-text">Testing the finished code</span></li>
            <li class="chapters-list-item"><span class="chapters-time">11:24</span><span class="chapters-text">Problems when creating the code</span></li>
            <li class="chapters-list-item"><span class="chapters-time">17:11</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>

Can AI Read Schematic And Write Software For Your Boards?

<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/-luLIJqURlY" 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">What is this video about</span></li>
            <li class="chapters-list-item"><span class="chapters-time">00:50</span><span class="chapters-text">Arduino compatibility</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:28</span><span class="chapters-text">Switch</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:16</span><span class="chapters-text">Text</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:06</span><span class="chapters-text">LEDs</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:52</span><span class="chapters-text">Board name and version</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:16</span><span class="chapters-text">Spread the tracks</span></li>
            <li class="chapters-list-item"><span class="chapters-time">12:24</span><span class="chapters-text">Connector names</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:00</span><span class="chapters-text">Horizontal / Vertical routing</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:07</span><span class="chapters-text">Net Color</span></li>
            <li class="chapters-list-item"><span class="chapters-time">18:10</span><span class="chapters-text">Track width</span></li>
            <li class="chapters-list-item"><span class="chapters-time">24:09</span><span class="chapters-text">2 Layer vs 4 layer PCB</span></li>
            <li class="chapters-list-item"><span class="chapters-time">25:22</span><span class="chapters-text">VIAs</span></li>
            <li class="chapters-list-item"><span class="chapters-time">26:10</span><span class="chapters-text">Placement</span></li>
            <li class="chapters-list-item"><span class="chapters-time">27:55</span><span class="chapters-text">VIAs on power and GND</span></li>
            <li class="chapters-list-item"><span class="chapters-time">30:47</span><span class="chapters-text">Power regulators</span></li>
            <li class="chapters-list-item"><span class="chapters-time">35:40</span><span class="chapters-text">Stitching capacitors and VIAs</span></li>
            <li class="chapters-list-item"><span class="chapters-time">38:09</span><span class="chapters-text">Through hole pins and thermal relief</span></li>
            <li class="chapters-list-item"><span class="chapters-time">41:30</span><span class="chapters-text">USB</span></li>
            <li class="chapters-list-item"><span class="chapters-time">45:37</span><span class="chapters-text">Clearance</span></li>
            <li class="chapters-list-item"><span class="chapters-time">50:36</span><span class="chapters-text">Critical signals</span></li>
            <li class="chapters-list-item"><span class="chapters-time">54:15</span><span class="chapters-text">Make it look nice</span></li>
            <li class="chapters-list-item"><span class="chapters-time">56:10</span><span class="chapters-text">Reference designators</span></li>
            <li class="chapters-list-item"><span class="chapters-time">57:11</span><span class="chapters-text">DRC checks</span></li>
            <li class="chapters-list-item"><span class="chapters-time">59:25</span><span class="chapters-text">Does it work?</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>

Do you also make these mistakes 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/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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Useful TIP: What Track Width To Use When Routing PCB?

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Do you also make these mistakes in PCB Layout?

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