[JesseDarr] recently wrote in to tell us about their dynamic Arm for Robitc Mischief (dARM), a mostly 3D printed six degrees of freedom (6DOF) robotic arm that’s designed to be …read more (https://hackaday.com/2025/04/08/printed-robotic-arm-pumps-up-with-brushless-motors/)

LayerLapse Simplifies 3D Printer Time-lapse Shots
https://hackaday.com/2025/04/08/layerlapse-simplifies-3d-printer-time-lapse-shots/

We know you’ve seen them: the time-lapses that show a 3D print coming together layer-by-layer without the extruder taking up half the frame. It takes a little extra work compared …read more (https://hackaday.com/2025/04/08/layerlapse-simplifies-3d-printer-time-lapse-shots/)

Turning Old Cellphones into SBCs
https://hackaday.com/2025/04/08/turning-old-cellphones-into-sbcs/

[David] sent us a tip about a company in Belgium, Citronics, that is looking to turn old cellphones into single-board computers for embedded Linux applications. We think it’s a great …read more (https://hackaday.com/2025/04/08/turning-old-cellphones-into-sbcs/)

The Computers of EPCOT
https://hackaday.com/2025/04/08/the-computers-of-epcot/

Even if you aren’t a Disney fan, you probably know about EPCOT — Experimental Prototype Community of Tomorrow — a Disney attraction that promised a glimpse of the future. [ErnieTech] …read more (https://hackaday.com/2025/04/08/the-computers-of-epcot/)

FreeDOS 1.4 Released
https://hackaday.com/2025/04/08/freedos-1-4-released/

Even in 2025 there are still many applications for a simple Disk Operating System (DOS), whether this includes running legacy software (including MS-DOS games & Windows 3.x), or (embedded) systems …read more (https://hackaday.com/2025/04/08/freedos-1-4-released/)

Designing A Tone Control Properly
https://hackaday.com/2025/04/08/designing-a-tone-control-properly/

Many years ago, audio equipment came with a tone control, a simple RC filter that would cut or boost the bass to taste. As time passed, this was split into …read more (https://hackaday.com/2025/04/08/designing-a-tone-control-properly/)

ASCII to Mainframe
https://hackaday.com/2025/04/08/ascii-to-mainframe/

IBM mainframes are known for very unusual terminals. But IBM made many different things, including the IBM 3151 ASCII terminal, which uses a cartridge to emulate a VT220 terminal. [Norbert …read more (https://hackaday.com/2025/04/08/ascii-to-mainframe/)

Dozens of Solenoids Turn Vintage Typewriter into a Printer
https://hackaday.com/2025/04/08/dozens-of-solenoids-turn-vintage-typewriter-into-a-printer/