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  24. <title>CardFlix: NFC Cards for Kid-Friendly Streaming Magic</title>
  25. <link>https://hackaday.com/2025/11/05/cardflix-nfc-cards-for-kid-friendly-streaming-magic/</link>
  26. <comments>https://hackaday.com/2025/11/05/cardflix-nfc-cards-for-kid-friendly-streaming-magic/#comments</comments>
  28. <dc:creator><![CDATA[Matt Varian]]></dc:creator>
  29. <pubDate>Wed, 05 Nov 2025 12:00:00 +0000</pubDate>
  30. <category><![CDATA[hardware]]></category>
  31. <category><![CDATA[ESP8266]]></category>
  32. <category><![CDATA[esphome]]></category>
  33. <category><![CDATA[home assisstant]]></category>
  34. <category><![CDATA[pn532]]></category>
  35. <guid isPermaLink="false">https://hackaday.com/?p=873261</guid>
  36.  
  37. <description><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" fetchpriority="high" srcset="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png 2048w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=800,450 800w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=1536,864 1536w" sizes="(max-width: 800px) 100vw, 800px" data-attachment-id="873263" data-permalink="https://hackaday.com/2025/11/05/cardflix-nfc-cards-for-kid-friendly-streaming-magic/image11-banner/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png" data-orig-size="2048,1152" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="image11-banner" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?w=800" /></div>For most of us, the days of having to insert a disc to play our media are increasingly behind us. But if you&#8217;d like to provide your kids with the <a href="https://hackaday.com/2025/11/05/cardflix-nfc-cards-for-kid-friendly-streaming-magic/" class="read-more">&#8230;read more</a>]]></description>
  38. <content:encoded><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" srcset="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png 2048w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=800,450 800w, https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?resize=1536,864 1536w" sizes="(max-width: 800px) 100vw, 800px" data-attachment-id="873263" data-permalink="https://hackaday.com/2025/11/05/cardflix-nfc-cards-for-kid-friendly-streaming-magic/image11-banner/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png" data-orig-size="2048,1152" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="image11-banner" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/image11-banner.png?w=800" /></div><p dir="auto">For most of us, the days of having to insert a disc to play our media are increasingly behind us. But if you&#8217;d like to provide your kids with the experience, <a href="https://blog.udinic.com/2025/11/01/building-cardflix-a-modern-twist-on-the-old-movie-shelf/" target="_blank">you could use CardFlix</a>.</p>
  39. <p dir="auto">For the electronics, [Udi] used the readily available ESP8266 D1 Mini module connected via I2C to a PN532 NFC reader. To trigger the different movies, there are over 50 cards, each with not only its unique NFC tag but also small posters that [Udi] printed showing the show and then laminated, ensuring they will survive plenty of use. The D1 Mini and NFC reader are housed in a 3D printed case, which ends up being almost smaller than the 5V DC adapter powering it, allowing it to be mounted above an outlet out of the way. The deck of movie cards is also housed in a pair of printed boxes: the larger one for the whole collection and a small one for the most often used shows. Should you want to print your own, all the design files are provided in the write-up.</p>
  40. <p dir="auto">The D1 Mini was programmed using ESPHome. This firmware allows it to easily connect back to Home Assistant, which does most of the heavy lifting for this project. When a card is scanned, Home Assistant can tell which TV the scanner was near, allowing this system to be used in more than one location. It also knows which card was scanned so it can play the right movie. Home Assistant also handles ensuring the TV in question is powered on, as well as figuring out what service should be called for that particular movie to be shown.</p>
  41. <p dir="auto">Be sure to check out some of the other projects we&#8217;ve featured that use <a href="https://hackaday.com/tag/esphome/">ESPHome</a> to automate tasks.</p>
  42. <p><span id="more-873261"></span></p>
  43. <p><iframe title="CardFlix Demo inside Out" width="800" height="450" src="https://www.youtube.com/embed/_sqxoAX3GW0?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></p>
  44. ]]></content:encoded>
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  47. <slash:comments>2</slash:comments>
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  57. <title>Audio Sound Capture Project Needs Help</title>
  58. <link>https://hackaday.com/2025/11/05/audio-sound-capture-project-needs-help/</link>
  59. <comments>https://hackaday.com/2025/11/05/audio-sound-capture-project-needs-help/#comments</comments>
  61. <dc:creator><![CDATA[Ian Bos]]></dc:creator>
  62. <pubDate>Wed, 05 Nov 2025 09:00:59 +0000</pubDate>
  63. <category><![CDATA[Software Development]]></category>
  64. <category><![CDATA["audiophiles"]]></category>
  65. <category><![CDATA[audio]]></category>
  66. <category><![CDATA[harmonic analysis]]></category>
  67. <category><![CDATA[open source]]></category>
  68. <category><![CDATA[python]]></category>
  69. <guid isPermaLink="false">https://hackaday.com/?p=873326</guid>
  70.  
  71. <description><![CDATA[<div><img width="545" height="389" src="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?w=545" class="attachment-large size-large wp-post-image" alt="Audio field emission map" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png 545w, https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?resize=250,178 250w, https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?resize=400,286 400w" sizes="auto, (max-width: 545px) 100vw, 545px" data-attachment-id="873327" data-permalink="https://hackaday.com/2025/11/05/audio-sound-capture-project-needs-help/audiobubble/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png" data-orig-size="545,389" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="audioBubble" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?w=545" /></div>When you are capturing audio from a speaker, you are rarely capturing the actual direct output of such a system. There are reflections and artifacts caused by anything and everything <a href="https://hackaday.com/2025/11/05/audio-sound-capture-project-needs-help/" class="read-more">&#8230;read more</a>]]></description>
  72. <content:encoded><![CDATA[<div><img width="545" height="389" src="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?w=545" class="attachment-large size-large wp-post-image" alt="Audio field emission map" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png 545w, https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?resize=250,178 250w, https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?resize=400,286 400w" sizes="auto, (max-width: 545px) 100vw, 545px" data-attachment-id="873327" data-permalink="https://hackaday.com/2025/11/05/audio-sound-capture-project-needs-help/audiobubble/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png" data-orig-size="545,389" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="audioBubble" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png?w=545" /></div><p>When you are capturing audio from a speaker, you are rarely capturing the actual direct output of such a system. There are reflections and artifacts caused by anything and everything in the environment that make it to whatever detector you might be using. With the modern computation age, you would think there would be a way to compensate for such artifacts, and this is what<a href="https://hackaday.io/project/204379-loudspeaker-acoustic-holography-lah-scanner" target="_blank"> [d.fapinov] set out to do</a>.</p>
  73. <p>[d.fapinov] has put together a code base for simulating and reversing environmental audio artifacts made to rival systems, entirely orders of magnitude higher in cost. The system relies on similar principles used in radio wave antenna transmission to calculate the audio output map, called spherical harmonic expansion. Once this map is calculated and separated from outside influence, you can truly measure the output of an audio device.</p>
  74. <p>The only problem is that the project needs to be tested in the real world. [d.fapinov] has gotten this far but is unable to continue with the project. A way to measure audio from precise locations around the output is required, as well as the appropriate control for such a device.</p>
  75. <p>Audio enthusiasts go deep into this tech, and if you want to become one of them, check out <a href="https://hackaday.com/2025/10/28/know-audio-lossy-compression-algorithms-and-distortion/">this article on audio compression and distortion</a>.</p>
  76. ]]></content:encoded>
  78. <wfw:commentRss>https://hackaday.com/2025/11/05/audio-sound-capture-project-needs-help/feed/</wfw:commentRss>
  79. <slash:comments>7</slash:comments>
  82. <post-id xmlns="com-wordpress:feed-additions:1">873326</post-id>
  83. <media:thumbnail url="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png" />
  84. <media:content url="https://hackaday.com/wp-content/uploads/2025/11/audioBubble-e1762132844400.png" medium="image">
  85. <media:title type="html">audioBubble</media:title>
  86. </media:content>
  87. </item>
  88. <item>
  89. <title>X-wing Aircraft Are Trickier Than They Look</title>
  90. <link>https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/</link>
  91. <comments>https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/#comments</comments>
  93. <dc:creator><![CDATA[Donald Papp]]></dc:creator>
  94. <pubDate>Wed, 05 Nov 2025 06:00:50 +0000</pubDate>
  95. <category><![CDATA[drone hacks]]></category>
  96. <category><![CDATA[3d printed]]></category>
  97. <category><![CDATA[drone]]></category>
  98. <category><![CDATA[FPV]]></category>
  99. <category><![CDATA[star wars]]></category>
  100. <category><![CDATA[X-Wing]]></category>
  101. <guid isPermaLink="false">https://hackaday.com/?p=873041</guid>
  102.  
  103. <description><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png 1920w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=800,450 800w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=1536,864 1536w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="873052" data-permalink="https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/x-wing-drone-banner/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png" data-orig-size="1920,1080" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="X-wing drone-banner" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?w=800" /></div>The iconic X-wing ship design from Star Wars is something many a hobbyist have tried to recreate, and not always with success. While [German engineer] succeeded in re-imagining an FPV <a href="https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/" class="read-more">&#8230;read more</a>]]></description>
  104. <content:encoded><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png 1920w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=800,450 800w, https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?resize=1536,864 1536w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="873052" data-permalink="https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/x-wing-drone-banner/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png" data-orig-size="1920,1080" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="X-wing drone-banner" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png?w=800" /></div><p>The iconic X-wing ship design from <em>Star Wars</em> is something many a hobbyist have tried to recreate, and not always with success. While [German engineer] <a href="https://www.youtube.com/watch?v=ocwTty_xnuc" target="_blank">succeeded in re-imagining an FPV quadcopter as an X-wing fighter</a>, the process also highlighted why there have been more failures than successes when it comes to DIY X-wing aircraft.</p>
  105. <p>For one thing, the X-wing shape is not particularly aerodynamic. It doesn&#8217;t make a very good airplane. Quadcopters on the other hand rely entirely on precise motor control to defy gravity in a controlled way. It occurred to [German engineer] that if one tilts their head just so, an X-wing fighter bears a passing resemblance to a <a href="https://hackaday.com/2024/03/10/got-to-go-fast-the-rise-of-super-fast-fpv-drones/">rocket-style quadcopter layout</a>, so he set out to CAD up a workable design.</p>
  106. <figure id="attachment_873054" aria-describedby="caption-attachment-873054" style="width: 500px" class="wp-caption alignright"><a href="https://hackaday.com/wp-content/uploads/2025/10/X-wing-anim-flyby.gif" target="_blank"><img loading="lazy" decoding="async" data-attachment-id="873054" data-permalink="https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/x-wing-anim-flyby/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-anim-flyby.gif" data-orig-size="500,282" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="X-wing anim flyby" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-anim-flyby.gif?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/X-wing-anim-flyby.gif?w=500" class="wp-image-873054 size-full" src="https://hackaday.com/wp-content/uploads/2025/10/X-wing-anim-flyby.gif" alt="" width="500" height="282" /></a><figcaption id="caption-attachment-873054" class="wp-caption-text">When flying at speed, the aircraft goes nearly horizontal and the resemblance to an X-wing fighter is complete.</figcaption></figure>
  107. <p>One idea that seemed ideal but ultimately didn&#8217;t work was using four EDF (electric ducted fan) motors mounted in the same locations as the four cylindrical engines on an X-wing. Motors large enough to fly simply wouldn&#8217;t fit without ruining the whole look. A workable alternative ended up being the four props and brushless motors mounted on the ends of the wings, like you see here.</p>
  108. <p>The unit still needed a lot of fine tuning to get to a properly workable state, but it got there. It takes off and lands vertically, like a classical quadcopter, but when flying at speed it levels out almost completely and looks just like an X-wing as it screams by. It&#8217;s in sharp contrast to the slow, methodical movements of <a href="https://hackaday.com/2016/02/20/imperial-shuttle-drone-is-sure-to-scare-the-cat/">this Imperial Shuttle drone</a>.</p>
  109. <p>There are also a couple design elements in [German engineer]&#8217;s build we thought were notable. The spring-loaded battery door (all 3D-printed, including the spring) looks handy and keeps the lines of the aircraft clean. And since it&#8217;s intended to be flown as an FPV (first person view) aircraft, the tilting camera mount in the nose swings the camera 90 degrees during takeoff and landing to make things a little easier on the pilot.</p>
  110. <p><a href="https://www.printables.com/model/1405920-x-wing-drone" target="_blank">3D models for the frame</a> (along with a parts list) are up for anyone who wants to give it a shot. Check it out in the video, embedded below.</p>
  111. <p><span id="more-873041"></span></p>
  112. <p><iframe loading="lazy" title="X-wing drone (it&#039;s fast)" width="800" height="450" src="https://www.youtube.com/embed/ocwTty_xnuc?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></p>
  113. ]]></content:encoded>
  115. <wfw:commentRss>https://hackaday.com/2025/11/04/x-wing-aircraft-are-trickier-than-they-look/feed/</wfw:commentRss>
  116. <slash:comments>7</slash:comments>
  119. <post-id xmlns="com-wordpress:feed-additions:1">873041</post-id>
  120. <media:thumbnail url="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png" />
  121. <media:content url="https://hackaday.com/wp-content/uploads/2025/10/X-wing-drone-banner.png" medium="image">
  122. <media:title type="html">X-wing drone-banner</media:title>
  123. </media:content>
  124.  
  125. <media:content url="https://hackaday.com/wp-content/uploads/2025/10/X-wing-anim-flyby.gif" medium="image" />
  126. </item>
  127. <item>
  128. <title>The Headache of Fake 74LS Logic Chips</title>
  129. <link>https://hackaday.com/2025/11/04/the-headache-of-fake-74ls-logic-chips/</link>
  130. <comments>https://hackaday.com/2025/11/04/the-headache-of-fake-74ls-logic-chips/#comments</comments>
  132. <dc:creator><![CDATA[Maya Posch]]></dc:creator>
  133. <pubDate>Wed, 05 Nov 2025 03:00:44 +0000</pubDate>
  134. <category><![CDATA[Parts]]></category>
  135. <category><![CDATA[74 series logic]]></category>
  136. <category><![CDATA[fake chips]]></category>
  137. <guid isPermaLink="false">https://hackaday.com/?p=873189</guid>
  138.  
  139. <description><![CDATA[<div><img width="800" height="387" src="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg 1261w, https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?resize=250,121 250w, https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?resize=400,193 400w, https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?resize=800,387 800w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="873194" data-permalink="https://hackaday.com/2025/11/04/the-headache-of-fake-74ls-logic-chips/fake_74ls_more_fun_fixing_it_youtube/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg" data-orig-size="1261,610" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="fake_74ls_more_fun_fixing_it_youtube" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?w=800" /></div>When you go on your favorite cheap online shopping platform and order a batch of  74LS logic ICs, what do you get? Most likely relabeled 74HC ICs, if the results <a href="https://hackaday.com/2025/11/04/the-headache-of-fake-74ls-logic-chips/" class="read-more">&#8230;read more</a>]]></description>
  140. <content:encoded><![CDATA[<div><img width="800" height="387" src="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg 1261w, https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?resize=250,121 250w, https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?resize=400,193 400w, https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?resize=800,387 800w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="873194" data-permalink="https://hackaday.com/2025/11/04/the-headache-of-fake-74ls-logic-chips/fake_74ls_more_fun_fixing_it_youtube/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg" data-orig-size="1261,610" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="fake_74ls_more_fun_fixing_it_youtube" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg?w=800" /></div><p>When you go on your favorite cheap online shopping platform and order a batch of  74LS logic ICs, what do you get? Most likely relabeled 74HC ICs, if the <a href="https://www.youtube.com/watch?v=yoV9hWPngzI" target="_blank">results of an AliExpress order</a> by [More Fun Fixing It] on YouTube are anything to judge by. Despite the claims made by the somewhat suspect markings on the ICs, even the cheap component tester used immediately identified them as 74HC parts.</p>
  141. <p>Why is this a problem, you might ask? Simply put, 74LS are Low-power Schottky chips using TTL logic levels, whereas 74HC are High-Speed CMOS, using CMOS logic levels. If these faked chips had used 74HCT, they would have been compatible with TTL logic levels, but with the TTL vs CMOS levels mismatch of 74HC, you are asking for trouble.</p>
  142. <p>CMOS typically requires that high levels are at least 70% of Vcc, and low to be at most 30% of Vcc, whereas TTL high level is somewhere above 2.0V. 74HC also cannot drive its outputs as strongly as 74LS, which opens another can of potential issues. Meanwhile HCT <a href="https://www.eevblog.com/forum/projects/replace-hc-by-hct-and-ls-by-hct/" target="_blank">can be substituted</a> for LS, but with the same lower drive current, which may or may not be an issue.</p>
  143. <p>Interestingly, when the AliExpress seller was contacted with these findings, a refund was issued practically immediately. This makes one wonder why exactly faked 74LS ICs are even being sold, when they&#8217;d most likely be stuffed into old home computers by presumably hardware enthusiasts with a modicum of skill and knowledge.</p>
  144. <p><span id="more-873189"></span></p>
  145. <p><iframe loading="lazy" title="I bought some 74LS Logic Chips from Ali Express. Guess what happened next?" width="800" height="450" src="https://www.youtube.com/embed/yoV9hWPngzI?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></p>
  146. ]]></content:encoded>
  148. <wfw:commentRss>https://hackaday.com/2025/11/04/the-headache-of-fake-74ls-logic-chips/feed/</wfw:commentRss>
  149. <slash:comments>13</slash:comments>
  152. <post-id xmlns="com-wordpress:feed-additions:1">873189</post-id>
  153. <media:thumbnail url="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg" />
  154. <media:content url="https://hackaday.com/wp-content/uploads/2025/11/fake_74ls_more_fun_fixing_it_youtube.jpg" medium="image">
  155. <media:title type="html">fake_74ls_more_fun_fixing_it_youtube</media:title>
  156. </media:content>
  157. </item>
  158. <item>
  159. <title>A Paintball Turret Controlled Via Xbox Controller</title>
  160. <link>https://hackaday.com/2025/11/04/a-paintball-turret-controlled-via-xbox-controller/</link>
  161. <comments>https://hackaday.com/2025/11/04/a-paintball-turret-controlled-via-xbox-controller/#comments</comments>
  163. <dc:creator><![CDATA[Lewin Day]]></dc:creator>
  164. <pubDate>Wed, 05 Nov 2025 00:00:46 +0000</pubDate>
  165. <category><![CDATA[Misc Hacks]]></category>
  166. <category><![CDATA[paintball]]></category>
  167. <category><![CDATA[Paintball marker]]></category>
  168. <category><![CDATA[sentry]]></category>
  169. <category><![CDATA[sentry gun]]></category>
  170. <category><![CDATA[sentry turret]]></category>
  171. <category><![CDATA[turret]]></category>
  172. <guid isPermaLink="false">https://hackaday.com/?p=872844</guid>
  173.  
  174. <description><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png 1280w, https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?resize=800,450 800w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="872886" data-permalink="https://hackaday.com/2025/11/04/a-paintball-turret-controlled-via-xbox-controller/i-built-an-xbox-controlled-paintball-turret-7-30-screenshot-1/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png" data-orig-size="1280,720" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="I Built an Xbox-Controlled Paintball Turret 7-30 screenshot (1)" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?w=800" /></div>Video games, movies, and modern militaries are all full of robotic gun turrets that allow for remotely-controlled carnage. [Paul Junkin] decided to build his own, albeit in a less-destructive paint-hurling <a href="https://hackaday.com/2025/11/04/a-paintball-turret-controlled-via-xbox-controller/" class="read-more">&#8230;read more</a>]]></description>
  175. <content:encoded><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png 1280w, https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?resize=800,450 800w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="872886" data-permalink="https://hackaday.com/2025/11/04/a-paintball-turret-controlled-via-xbox-controller/i-built-an-xbox-controlled-paintball-turret-7-30-screenshot-1/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png" data-orig-size="1280,720" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="I Built an Xbox-Controlled Paintball Turret 7-30 screenshot (1)" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png?w=800" /></div><p>Video games, movies, and modern militaries are all full of robotic gun turrets that allow for remotely-controlled carnage. [Paul Junkin] decided to build his own, <a href="https://www.youtube.com/watch?v=UVgqzoGp9NQ" target="_blank">albeit in a less-destructive paint-hurling fashion.</a></p>
  176. <p>The turret sits upon a lazy susan bearing mounted atop a aluminium extrusion frame. A large gear is mounted to the bearing allowing the turret to pan when driven by a stepper motor. A pair of pillow block bearings hold a horizontal shaft which mounts the two paint markers, which again is controlled by another stepper motor to move in the tilt axis. An ESP32 microcontroller is responsible for running the show, panning and tilting the platform by commanding the large stepper motors. Firing the paintball markers is achieved with solenoids mounted to the triggers, which cycle fast enough to make the semi-auto markers fire in a way that almost feels like full-auto. Commanding the turret is via an Xbox One controller; communicating with the ESP32 over Bluetooth using the BluePad32 library.</p>
  177. <p>It&#8217;s worth noting you shouldn&#8217;t shoot paintballs at unsuspecting individuals, since they can do extreme amounts of damage to those not wearing the proper protection. We&#8217;ve featured a great many other sentry guns over the years, too, <a href="https://hackaday.com/2019/08/12/locating-targets-with-charm-courtesy-of-a-life-size-portal-turret/">like this impressive <em>Portal</em>-themed build</a>. Video after the break.</p>
  178. <p><span id="more-872844"></span></p>
  179. <p><iframe loading="lazy" title="I Built an Xbox-Controlled Paintball Turret" width="800" height="450" src="https://www.youtube.com/embed/UVgqzoGp9NQ?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></p>
  180. ]]></content:encoded>
  182. <wfw:commentRss>https://hackaday.com/2025/11/04/a-paintball-turret-controlled-via-xbox-controller/feed/</wfw:commentRss>
  183. <slash:comments>4</slash:comments>
  186. <post-id xmlns="com-wordpress:feed-additions:1">872844</post-id>
  187. <media:thumbnail url="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png" />
  188. <media:content url="https://hackaday.com/wp-content/uploads/2025/10/I-Built-an-Xbox-Controlled-Paintball-Turret-7-30-screenshot-1-1.png" medium="image">
  189. <media:title type="html">I Built an Xbox-Controlled Paintball Turret 7-30 screenshot (1)</media:title>
  190. </media:content>
  191. </item>
  192. <item>
  193. <title>Print in Place Pump Pushes Limits of Printing</title>
  194. <link>https://hackaday.com/2025/11/04/print-in-place-pump-pushes-limits-of-printing/</link>
  195. <comments>https://hackaday.com/2025/11/04/print-in-place-pump-pushes-limits-of-printing/#comments</comments>
  197. <dc:creator><![CDATA[Ian Bos]]></dc:creator>
  198. <pubDate>Tue, 04 Nov 2025 21:00:56 +0000</pubDate>
  199. <category><![CDATA[3d Printer hacks]]></category>
  200. <category><![CDATA[3d printed pump]]></category>
  201. <category><![CDATA[3d printing]]></category>
  202. <category><![CDATA[print in place]]></category>
  203. <category><![CDATA[water pump]]></category>
  204. <guid isPermaLink="false">https://hackaday.com/?p=873319</guid>
  205.  
  206. <description><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?w=800" class="attachment-large size-large wp-post-image" alt="Print in place pump being used next to ladder" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png 1920w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=800,450 800w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=1536,864 1536w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="873320" data-permalink="https://hackaday.com/2025/11/04/print-in-place-pump-pushes-limits-of-printing/how-to-build-a-print-in-place-pump-using-water-soluble-supports-5-25-screenshot/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png" data-orig-size="1920,1080" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="How To Build A Print-in-Place Pump (Using WATER-SOLUBLE SUPPORTS) 5-25 screenshot" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?w=800" /></div>3D printing has taken off into the hands of almost anyone with a knack for wanting something quick and easy. No more messing around with machining or complex assembly. However, <a href="https://hackaday.com/2025/11/04/print-in-place-pump-pushes-limits-of-printing/" class="read-more">&#8230;read more</a>]]></description>
  207. <content:encoded><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?w=800" class="attachment-large size-large wp-post-image" alt="Print in place pump being used next to ladder" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png 1920w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=400,225 400w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=800,450 800w, https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?resize=1536,864 1536w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="873320" data-permalink="https://hackaday.com/2025/11/04/print-in-place-pump-pushes-limits-of-printing/how-to-build-a-print-in-place-pump-using-water-soluble-supports-5-25-screenshot/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png" data-orig-size="1920,1080" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="How To Build A Print-in-Place Pump (Using WATER-SOLUBLE SUPPORTS) 5-25 screenshot" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png?w=800" /></div><p>3D printing has taken off into the hands of almost anyone with a knack for wanting something quick and easy. No more messing around with machining or complex assembly. However, with the general hands-off nature of most 3D prints, what could be possible with a little more intervention during the printing process? [Ben] from Designed to Make represents this perfectly with an entire <a href="https://www.youtube.com/watch?v=HDBhGS5r62c" target="_blank">centrifugal pump printed as one</a>.</p>
  208. <p>This project may not entirely fit into the most strict sense of “print in place”; however, the entire pump is printed as one print file. The catch is the steps taken during printing, where a bearing is placed and a couple of filament changes are made to allow dissolvable supports to be printed. Once these supports are dissolved away, the body is coated with epoxy to prevent any leakage.</p>
  209. <p>Testing done by [Ben] showed more than impressive numbers from the experimental device. Compared to previous designs made to test impeller features, the all in one pump could stand its own against in most categories.</p>
  210. <p>If you want to check out the project yourself, check out the <a href="https://hackaday.io/project/204344-can-you-print-in-place-a-water-pump" target="_blank">Hackaday project here</a>. One of the greatest parts of the open source 3D printing world is the absolute freedom and ingenuity that comes out of it, and this project is no exception. For more innovations, check out this DIY <a href="https://hackaday.com/2024/12/28/full-color-3d-printing-with-polydye-and-existing-inkjet-cartridges/">full color 3D printing</a>!</p>
  211. <p><span id="more-873319"></span></p>
  212. <p><iframe loading="lazy" title="How To Build A Print-in-Place Pump (Using WATER-SOLUBLE SUPPORTS)" width="800" height="450" src="https://www.youtube.com/embed/HDBhGS5r62c?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></p>
  213. ]]></content:encoded>
  215. <wfw:commentRss>https://hackaday.com/2025/11/04/print-in-place-pump-pushes-limits-of-printing/feed/</wfw:commentRss>
  216. <slash:comments>3</slash:comments>
  219. <post-id xmlns="com-wordpress:feed-additions:1">873319</post-id>
  220. <media:thumbnail url="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png" />
  221. <media:content url="https://hackaday.com/wp-content/uploads/2025/11/How-To-Build-A-Print-in-Place-Pump-Using-WATER-SOLUBLE-SUPPORTS-5-25-screenshot.png" medium="image">
  222. <media:title type="html">How To Build A Print-in-Place Pump (Using WATER-SOLUBLE SUPPORTS) 5-25 screenshot</media:title>
  223. </media:content>
  224. </item>
  225. <item>
  226. <title>2025 Component Abuse Challenge: Weigh With A TL074</title>
  227. <link>https://hackaday.com/2025/11/04/2025-component-abuse-challenge-weigh-with-a-tl074/</link>
  228. <comments>https://hackaday.com/2025/11/04/2025-component-abuse-challenge-weigh-with-a-tl074/#comments</comments>
  230. <dc:creator><![CDATA[Jenny List]]></dc:creator>
  231. <pubDate>Tue, 04 Nov 2025 19:30:10 +0000</pubDate>
  232. <category><![CDATA[contests]]></category>
  233. <category><![CDATA[Parts]]></category>
  234. <category><![CDATA[2025 Component Abuse Challenge]]></category>
  235. <category><![CDATA[op-amp]]></category>
  236. <category><![CDATA[strain gauge]]></category>
  237. <guid isPermaLink="false">https://hackaday.com/?p=872317</guid>
  238.  
  239. <description><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg 800w, https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?resize=400,225 400w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="872498" data-permalink="https://hackaday.com/2025/11/04/2025-component-abuse-challenge-weigh-with-a-tl074/opamp-load-cell-featured/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg" data-orig-size="800,450" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="opamp-load-cell-featured" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?w=800" /></div>The late and lamented [Bob Pease] was one of a select band of engineers, each of whose authority in the field of analogue integrated circuit design was at the peak <a href="https://hackaday.com/2025/11/04/2025-component-abuse-challenge-weigh-with-a-tl074/" class="read-more">&#8230;read more</a>]]></description>
  240. <content:encoded><![CDATA[<div><img width="800" height="450" src="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?w=800" class="attachment-large size-large wp-post-image" alt="" style="margin: 0 auto; margin-bottom: 15px;" decoding="async" loading="lazy" srcset="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg 800w, https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?resize=250,141 250w, https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?resize=400,225 400w" sizes="auto, (max-width: 800px) 100vw, 800px" data-attachment-id="872498" data-permalink="https://hackaday.com/2025/11/04/2025-component-abuse-challenge-weigh-with-a-tl074/opamp-load-cell-featured/" data-orig-file="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg" data-orig-size="800,450" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="opamp-load-cell-featured" data-image-description="" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/10/opamp-load-cell-featured.jpg?w=800" /></div><p>The late and lamented [Bob Pease] was one of a select band of engineers, each of whose authority in the field of analogue integrated circuit design was at the peak of the art. So when he remarks on something in his books, it&#8217;s worth taking notice. It was just such an observation that caught the eye of [Trashtronic]; that the pressure on a precision op-amp from curing resin could be enough to change the device&#8217;s offset voltage. Could this property be used for something? <a href="https://hackaday.io/project/204284-op-amp-weight-scale" target="_blank">The op-amp as a load cell was born</a>!</p>
  241. <p>The result is something of an op-amp torture device, resembling a small weighing machine with a couple of DIP-8 packages bearing the load. Surprisingly modest weights will change the offset voltage, though it was found that the value will drift over time.</p>
  242. <p>This is clearly an experimental project and not a practical load cell, but it captures the essence of the <a href="https://hackaday.com/2025/09/16/2025-hackaday-component-abuse-challenge-let-the-games-begin/">2025 Component Abuse Challenge</a> of which it forms a part. Finding completely unexpected properties of components doesn&#8217;t always have to lead to useful results, and we&#8217;re glad someone had done this one just to find out whether or not it works. You still just about have time for an entry yourself if you fancy giving it a go.</p>
  243. <div id="sidebar-mobile-1" class="widget_text widget widget_custom_html amr_widget"><div class="textwidget custom-html-widget"><div style="text-align: center; font-size: 24px; font-weight: 300; margin: 12px 0;">
  244. <a href="https://hackaday.io/contest/204037-component-abuse-challenge" target="_blank" rel="noopener" target="_blank"><img decoding="async" style="width: auto; min-width: 180px; height: 99px;" src="https://hackaday.com/wp-content/uploads/2025/09/ComponentAbuse_728x90.jpg" alt="2025 Hackaday Component Abuse Challenge" /></a>
  245. </div>
  246. </div></div>
  247. ]]></content:encoded>
  249. <wfw:commentRss>https://hackaday.com/2025/11/04/2025-component-abuse-challenge-weigh-with-a-tl074/feed/</wfw:commentRss>
  250. <slash:comments>8</slash:comments>
  253. <post-id xmlns="com-wordpress:feed-additions:1">872317</post-id>
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