<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/fFI33f4TejM" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
Ken Burns has published 7 hardware projects on Kickstarter. He explains how it works.
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://tinycircuits.com/">Ken's company TinyCircuits</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Can You Make Money on Kickstarter HW Projects?

<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/2oA4X3OTz0M" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
Interesting experiments and examples to help you to understand ground layout in PCB. Explained by Hans Rosenberg
    </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">00:19</span><span class="chapters-text">Currents flow under track</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:10</span><span class="chapters-text">What happen when you are making a board</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:37</span><span class="chapters-text">Where currents flow</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:01</span><span class="chapters-text">Experiment: Cut under track</span></li>
            <li class="chapters-list-item"><span class="chapters-time">19:51</span><span class="chapters-text">Floating copper fill</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:15</span><span class="chapters-text">Grounded copper fill</span></li>
            <li class="chapters-list-item"><span class="chapters-time">27:04</span><span class="chapters-text">Experiment: Filter</span></li>
            <li class="chapters-list-item"><span class="chapters-time">35:05</span><span class="chapters-text">2 Layer vs. 4 Layer</span></li>
            <li class="chapters-list-item"><span class="chapters-time">44:00</span><span class="chapters-text">3 rules to prevent ground problems</span></li>
            <li class="chapters-list-item"><span class="chapters-time">46:05</span><span class="chapters-text">Example: Ground plane</span></li>
            <li class="chapters-list-item"><span class="chapters-time">49:52</span><span class="chapters-text">Example: 1 VIA per GND pin</span></li>
            <li class="chapters-list-item"><span class="chapters-time">54:46</span><span class="chapters-text">Example: Gap in GND plane</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:02:00</span><span class="chapters-text">Example: FPGA board redesign</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:05:16</span><span class="chapters-text">Star grounding</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:07:39</span><span class="chapters-text">Multiple ground planes</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:14:30</span><span class="chapters-text">Example: Digital and Analog on one board</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:16:40</span><span class="chapters-text">About Hans</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.youtube.com/@HansRosenberg74">Hans´ YouTube</a></li>
            <li class="links-list-item"><a href="https://www.hans-rosenberg.com/">Hans´ website</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Examples of BAD Ground in PCB Layout And How to Fix It

<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/X-qubBLJDD8" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
What will happen if you don't have enough GND pins on your connector?
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.colorado.edu/faculty/bogatin/">About Eric</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Do You Design Connector Pinout Correctly? | Eric Bogatin

<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/U5_61EJlytc" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Very interesting and practical experiment to see how noise will increase on power when running a specific software.
    </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/florian-h%C3%A4mmerle-a8304152/">Florian's LinkedIn</a></li>
            <li class="links-list-item"><a href="https://youtu.be/5Ca0Eah7eKI">PCB Layout & Decoupling - Explained why it's so complicated (Part 1)</a></li>
            <li class="links-list-item"><a href="https://youtu.be/hZSOhVdzqZk">PCB Layout & Decoupling - Measuring and Fixing (Part 3)</a></li>
        </ul>
    </div>   
</div>


Everyone designing boards needs to know this about power and noise | Florian Hämmerle | #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/TVSFg94k1J0" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        A complicated topic explained by simple words. Maybe too simple, but I hope it helps many people.
    </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">00:42</span><span class="chapters-text">Simple view</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">05:01</span><span class="chapters-text">2 Resistor view</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">08:51</span><span class="chapters-text">3 RLC view</span>
            </li>
            <li class="chapters-list-item">
                <span class="chapters-time">14:11</span><span class="chapters-text">Fields & Energy view</span>
            </li>
        </ul>
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/U5_61EJlytc">Everyone designing boards needs to know this about power and noise</a></li>
            <li class="links-list-item"><a href="https://youtu.be/WdlN8bHw-w0">Do you need thick copper layers in PCB for high currents? Are you sure?</a></li>
            <li class="links-list-item"><a href="https://youtu.be/5Ca0Eah7eKI">PCB Layout & Decoupling - Explained why it's so complicated (Part 1)</a></li>
            <li class="links-list-item"><a href="https://youtu.be/Tt8X6_maj6c">PCB Layout & Decoupling - Understanding Impedance (Part 2)</a></li>
            <li class="links-list-item"><a href="https://youtu.be/hZSOhVdzqZk">PCB Layout & Decoupling - Measuring and Fixing (Part 3)</a></li>
        </ul>
    </div>   
</div>


Why the circuit in the thumbnail is wrong? Do you know?

<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/PkJqE-EsoWY" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Massively parallel NE5532 op-amp low-noise, low-distortion headphone amplifier design (single DC rail). Update video from previous version, going through design considerations, schematics, and PCB design.
    </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">02:55</span><span class="chapters-text">Previous Version</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:29</span><span class="chapters-text">Schematic Overview</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:58</span><span class="chapters-text">Power Supply</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:29</span><span class="chapters-text">Pre-Amplifier</span></li>
            <li class="chapters-list-item"><span class="chapters-time">11:47</span><span class="chapters-text">Power Amplifier</span></li>
            <li class="chapters-list-item"><span class="chapters-time">13:03</span><span class="chapters-text">PCB Overview</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:51</span><span class="chapters-text">Front and Rear Panels</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:46</span><span class="chapters-text">Douglas Self Books</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.elektormagazine.com/magazine/elektor-201010/19460">Inspired by Douglas Self</a></li>
            <li class="links-list-item"><a href="https://www.youtube.com/watch?v=Z2GUoi63pJs&ab_channel=Phil%E2%80%99sLab">Headphone Amplifier Design | NE5532, KiCAD, Baxandall Volume Control - Phil´s Lab #24</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>

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Headphone Amplifier Design (V2) | NE5532 - Phil's Lab #61

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