The judges’ ballots are in and we’re proud to present the ten winners of the fourth round of the 2021 Hackaday Prize. We love robots, and it’s obvious that you …read more (https://hackaday.com/2021/10/07/meet-the-winners-of-the-hackaday-prize-round-four-redefine-robots/)

Linux Fu: Globs vs Regexp
https://hackaday.com/2021/10/07/linux-fu-globs-vs-regexp/

I once asked a software developer at work how many times we called fork() in our code. I’ll admit, it was a very large project, but I expected the answer …read more (https://hackaday.com/2021/10/07/linux-fu-globs-vs-regexp/)

Halloween Build: Exquisite Ray Gun has Sound Effects
https://hackaday.com/2021/10/07/halloween-build-exquisite-ray-gun-has-sound-effects/

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/