When we first saw [lonesoulsurfer’s] ray gun, we thought it looked oddly familiar. Sure, it looks like a vintage ray gun you might see in a dozen 1950-era movies or …read more (https://hackaday.com/2021/10/07/halloween-build-exquisite-ray-gun-has-sound-effects/)

C-Clamp Becomes Light-Duty Arbor Press
https://hackaday.com/2021/10/07/c-clamp-becomes-light-duty-arbor-press/

[ThingaUser] made a tool to solve a specific problem of theirs, but the design also happens to be a pretty good way to turn a c-clamp into a poor man’s …read more (https://hackaday.com/2021/10/07/c-clamp-becomes-light-duty-arbor-press/)

Building Your Own Filing Machine From A Kit
https://hackaday.com/2021/10/07/building-your-own-filing-machine-from-a-kit/

Files are a very useful important tool if you’re machining your own parts. They can do plenty of shaping themselves on smaller parts in particular. Powering such a tool just …read more (https://hackaday.com/2021/10/07/building-your-own-filing-machine-from-a-kit/)

LEONARDO: The Hopping, Flying Bipedal Robot
https://hackaday.com/2021/10/07/leonardo-the-hopping-flying-bipedal-robot/

We appear to have a new entry atop the “Robots That Creep Us Out” leader board: meet LEONARDO, the combination quadcopter/bipedal robot. LEONARDO, a somewhat tortured name derived from “LEgs …read more (https://hackaday.com/2021/10/07/leonardo-the-hopping-flying-bipedal-robot/)

Groovy TV Gets A Very Brady Makeover
https://hackaday.com/2021/10/07/groovy-tv-gets-a-very-brady-makeover/

Here’s the story of an old Sharp TV, which was donated to [mandy] to be hacked. Just one look and you can see, very clearly, it plays old Brady Bunch …read more (https://hackaday.com/2021/10/07/groovy-tv-gets-a-very-brady-makeover/)

LED Matrix Hourglass Knows Which Way is Up
https://hackaday.com/2021/10/08/led-matrix-hourglass-knows-which-way-is-up/

[Fearless Night]’s slick dual hourglass doesn’t just simulate sand with LEDs, it also emulates the effects of gravity on those simulated particles and offers a few different mode options. The …read more (https://hackaday.com/2021/10/08/led-matrix-hourglass-knows-which-way-is-up/)

Power Your Home With a Water Battery
https://hackaday.com/2021/10/08/power-your-home-with-a-water-battery/

I’ve stated it before on Hackaday but one of the most interesting engineering challenges posed to me this year was “how could you store enough energy to power a decent …read more (https://hackaday.com/2021/10/08/power-your-home-with-a-water-battery/)