Links

https://www.youtube.com/watch?v=s-41UF02vrU Tech Ingredients is the best nerdy highschool teacher you’ll ever find on YouTube, but aside from that he also goes over some pretty cool topics and this one of him diving into AC and Geothermal cooling is no exception.
https://youtu.be/DvNDfViNq3k?si=X63oVHvfVSiv3zt3 AvE has long been one of my favorite YouTubers, I’ve not shared his stuff before as he’s rather rough around the edges at times but I think his breakdown of this cool “industrial lego” showing how alot of parts peice together if you know how to read their measurements.
https://www.joshwcomeau.com/svg/interactive-guide-to-paths/ SVG stands for Scalable Vector Graphics, often used to maintain all details of an image regardless of how large/small. This guide goes in-depth into how they work with some fun interactive knobs to turn to better understand what property controls what aspect of them.
https://hackaday.com/2025/08/25/diy-telescope-mount-for-stellar-tracking/ This is a great telescope mount where he first figured out a precise drive mechanism, built his own PCB to control it, had parts CNC’ed and in the end was able to control a telescope within 1-2 arcseconds.
https://opensourcesecurity.io/2025/08-oss-one-person/ This is an interesting investigation into opensource software, and how most opensource software is maintained by just a single developer which makes sense as it’s often a passion project.
https://sites.google.com/site/oh6dccw/strangecwkeys CW keys stand for Continuous Wave keys which are the devices you see morse code operators using to transmit the dots and dashes, and here is a list of some pretty funny devices used for that function.
https://www.youtube.com/watch?v=vJ43DjwLPGA Stuff made here often stuns with cool combos of software, hardware, electrical, but in this one he went 100% analog mechanical design and it’s fantastic.

Cool historical fact

https://en.wikipedia.org/wiki/Telefon_Hírmondó We often think about electronic music and news as being a relatively new thing, however it wasn’t Spotify or Pandora leading the way, back in 1893 Tivadar ****Puskás was doing it with news, music and even commercials. Starting small it grew to have over 15k subscribers for what would become the first broadcast network.