<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/sfcFgt5RZbM" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
Watch close details of building a keyboard - from soldering to programming. 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">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

I built a real electronic product from home… and recorded everything

<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/tqi6PU8U-W0" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        I built a circuit designed by AI.
    </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">00:39</span><span class="chapters-text">Building the circuit</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:47</span><span class="chapters-text">Installing CircuitPython</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:53</span><span class="chapters-text">Running and fixing the code</span></li>
            <li class="chapters-list-item"><span class="chapters-time">08:33</span><span class="chapters-text">Results</span></li>
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://x.com/i/grok/share/5T8BmTFnsI9Rr195HKz5qPQ8U">My chat with A</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

I asked AI to design an electronic circuit and write software for it. Here is what happened ...

<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/r_zaDXqUSn8" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
For everyone who would like to learn how to start with RP2040 / RP2350 programming. Thank you very much Scott Shawcroft
    </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">01:52</span><span class="chapters-text">Flashing CircuitPython on Raspberry PI PICO</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:48</span><span class="chapters-text">How to run your code</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:29</span><span class="chapters-text">Blinky example</span></li>
            <li class="chapters-list-item"><span class="chapters-time">16:28</span><span class="chapters-text">Addressable RGB LED example - NeoPixel</span></li>
            <li class="chapters-list-item"><span class="chapters-time">30:13</span><span class="chapters-text">Input example - Push button</span></li>
            <li class="chapters-list-item"><span class="chapters-time">37:10</span><span class="chapters-text">About serial port</span></li>
            <li class="chapters-list-item"><span class="chapters-time">42:12</span><span class="chapters-text">Making an USB keyboard - example</span></li>
            <li class="chapters-list-item"><span class="chapters-time">53:19</span><span class="chapters-text">I2C example</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:06:59</span><span class="chapters-text">WiFi Example</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:15:45</span><span class="chapters-text">Webserver and controlling LED over WiFi example</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:22:04</span><span class="chapters-text">About Scott</span></li>
    </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/tannewt/">Scott´s LinkedIn</a></li>
            <li class="links-list-item"><a href="https://adafruit-playground.com/u/tannewt/pages/robert-feranec-stream-notes">Download examples from the video here</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL Online courses</a></li>
        </ul>
    </div>  
</div>

Starting with RP2040 / RP2350 PICO - Programming Tutorial for Beginners | StepByStep | CircuitPython

<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/4OBO760u7jg" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Do we have to route tracks with 50 OHM impedance? Can we use a different impedance? Why is it 50 OHMs?
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/U60y4JC0Wxs">Full interview with Eric</a></li>
            <li class="links-list-item"><a href="https://www.linkedin.com/in/eric-bogatin-368860/">Eric Bogatin</a></li>
            <li class="links-list-item"><a href="https://www.bethesignal.com/bogatin/3monthsubscription.php">Signal Integrity Academy (use FEDSI - 3 months free)</a></li>
        </ul>
    </div>   
</div>


Why is 50 OHM impedance used in PCB Layout? | Explained | 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/U60y4JC0Wxs" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        Everything you need to know to understand impedance in PCB layout (and TDR). Clear and easy to understand explanation by Eric Bogatin
    </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">00:49</span><span class="chapters-text">What TDR is and what it does?</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:37</span><span class="chapters-text">What is characteristic impedance</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:48</span><span class="chapters-text">Why reflections are bad</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:54</span><span class="chapters-text">Why do we use 50 ohm in pcb tracks?</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:28</span><span class="chapters-text">Are lower impedance tracks more immune to noise?</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:45</span><span class="chapters-text">Can you use any impedance for differential pairs?</span></li>
            <li class="chapters-list-item"><span class="chapters-time">27:10</span><span class="chapters-text">What is difference between closely and loosely coupled diff impedance</span></li>
            <li class="chapters-list-item"><span class="chapters-time">36:03</span><span class="chapters-text">Experimenting with TDR simulation</span></li>
            <li class="chapters-list-item"><span class="chapters-time">48:58</span><span class="chapters-text">Measuring and explaining TDR on a simple pcb track</span></li>
            <li class="chapters-list-item"><span class="chapters-time">56:39</span><span class="chapters-text">Can we do TDR on a real board?</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:02:13</span><span class="chapters-text">Measuring and explaining TDR on a pcb track with different width</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:05:53</span><span class="chapters-text">Answer: Why we sometimes remove ground under pads</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:07:49</span><span class="chapters-text">Measuring a coaxial cable with TDR</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:14:51</span><span class="chapters-text">Why you may need TDR are where it is used</span></li>
            <li class="chapters-list-item"><span class="chapters-time">1:19:00</span><span class="chapters-text">Do we really need to care about small changes in impedance? When?</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.linkedin.com/in/eric-bogatin-368860/">Eric Bogatin LinkedIn</a></li>
            <li class="links-list-item"><a href="https://www.bethesignal.com/bogatin/3monthsubscription.php">Signal Integrity Academy (use FEDSI - 3 months free)</a></li>
            <li class="links-list-item"><a href="https://youtu.be/ERvQeln9l-g">The video with Bert</a></li>
            <li class="links-list-item"><a href="https://youtube.com/playlist?list=PLXvLToQzgzdeRWySVRb3yeEbwVsNGU4jY">Robert´s server videos</a></li>
        </ul>
    </div>   
</div>


Every PCB Designer Needs To Know This About PCB Track Impedance | TDR | 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/7uupuor2Dc8" class="youtube-player" width="740" height="416.418" frameborder="0" allowfullscreen></iframe></span>
    </div>
    <div class="blog-content">
        New hardware and PCB design course on mixed-signal embedded systems just released!
    </div>
  
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">

            <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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