Plotters and drawing robots are fun projects that let you create art with all the precision and perfection that computer numerical control can deliver. [TUENHIDIY] demonstrates that ably with the …read more (https://hackaday.com/2022/04/15/multicolor-drawbot-highlights-importance-of-limit-switches/)

2022 Sci-Fi Contest: A Friendly Wall Drawing Robot
https://hackaday.com/2022/04/15/2022-sci-fi-contest-a-friendly-wall-drawing-robot/

Drawing on walls is fine for children, but adults tend to get bored quickly with such antics. Even more so when they realize who is responsible for cleaning up afterwards. …read more (https://hackaday.com/2022/04/15/2022-sci-fi-contest-a-friendly-wall-drawing-robot/)

Javascript is Everywhere. Even MSDOS
https://hackaday.com/2022/04/15/javascript-is-everywhere-even-msdos/

Although pundits have joked that Java’s “write once, run everywhere” slogan might be better expressed as “write once, debug everywhere,” a relative of Java — JavaScript — has delivered on …read more (https://hackaday.com/2022/04/15/javascript-is-everywhere-even-msdos/)

Calculating Pi On the 4004 CPU, Intel’s First Microprocessor
https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/

These days we are blessed with multicore 64-bit monster CPUs that can calculate an entire moon mission’s worth of instructions in the blink of an eye. Once upon a time, …read more (https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/)

Paper Tape Reader Self-calibrates, Speaks USB
https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/

Input devices consisting of optical readers for punched paper tape have been around since the earliest days of computing, so why stop now? [Jürgen]’s Paper Tape Reader project connects to …read more (https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/)

Tiny Pneumatic Tool Made from a Single(-ish) Bolt
https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/

We’ve noticed a couple of things about the “Widget from a Single Bolt” genre of metalworking videos. The first thing is that almost all of them need to use a …read more (https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/)

Easy, Extensible, Open
https://hackaday.com/2022/04/16/easy-extensible-open/

I’m a huge DIY’er. I don’t like to buy things when I can build them myself. But honestly, that doesn’t always end up in the optimal allocation of my time, …read more (https://hackaday.com/2022/04/16/easy-extensible-open/)