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An All-Iron Battery Isn’t Light, But It’s Cheap

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Rechargeable batteries are a technology that has been with us for well over a century, and which is undergoing a huge quantity of research into improved …

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Antenna Tuning For GHz Frequencies

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Antenna tuning at HF frequencies is something that radio amateurs learn as part of their licence exam, and then hone over their time operating. A few …

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Simulate Climate With An Arduino

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There are usually two ways to go about any task: the easy way and the hard way. Sometimes we might not know there are two options, …

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Memristor Computing On A Chip

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Memristors have been — so far — mostly a solution looking for a problem. However, researchers at the University of Michigan are claiming the first memristor-based …

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How To Build A CubeSat

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There was a time when building your own satellite and having it placed into orbit would have been a wild dream. Now it is extremely possible, …

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Fail Of The Week: Toilets And High Voltage Do Not Mix

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Imagine if you will that you are enthroned upon the porcelain, minding your own business while doing your business. You’re catching up on Hackaday on your …

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An Exoskeleton Arm For A Hacker On A Budget

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Whether it is motivated by a dream of superhuman strength courtesy of a mech suit or of mobility for those with impaired muscle function, the powered …

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Retrotechtacular: The OSCAR 7 Satellite Died And Was Reborn 20 Years Later

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If I were to ask you what is the oldest man-made orbiting satellite still in use, I’d expect to hear a variety of answers. Space geeks …

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Hackaday Podcast 029: Your Face In Silver Sand, Tires Of The Future, ESP32 All The CNC Things, And Sub In A Jug

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Hackaday Editors Elliot Williams and Mike Szczys geek out over the latest hacks. This week we saw a couple of clever CNC builds that leverage a …

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Computer Optimized 3D Printed Bookshelves

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Thomas does a lot of interesting experiments with 3D printing and lately, he’s been using the free version of Fusion 360 to do topology optimization. He …