https://hackaday.io/project/183679-solari-cifra-5-hack
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2022/02/9671971643124717001.jpeg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/02/9671971643124717001.jpeg?w=800">[Alfredo Cortellini] was perusing an antique shop in Bologna, and came across a nice example of a late 1950s timepiece, in the shape of a Solari Cifra 5 slave clock, …read more (https://hackaday.com/2022/02/14/a-solari-mechanical-digital-clock-hack-with-a-little-extra/)

As Fast as a Speeding Bullet
https://hackaday.com/2022/02/14/as-fast-as-a-speeding-bullet/

[Electronoobs] built a coil gun and the obvious question is: how fast is the projectile? To answer it, he built a chronograph suitable for timing a bullet. The principle is …read more (https://hackaday.com/2022/02/14/as-fast-as-a-speeding-bullet/)

Printing Magnets
https://hackaday.com/2022/02/14/printing-magnets/

A research center in Spain has been working on ways to solve recent supply chain issues. One of these issues is a shortage of materials to make magnets. Their answer? …read more (https://hackaday.com/2022/02/14/printing-magnets/)

A Hombrew Retro Laptop
https://hackaday.com/2022/02/14/a-hombrew-retro-laptop/

We feel bad when we see a retrocomputer project and think, “Hey! That’s not that old.” But, usually, when we think about it, it really is. Take the Penkesu. It …read more (https://hackaday.com/2022/02/14/a-hombrew-retro-laptop/)

Accurately Track Your Mains Frequency
https://hackaday.com/2022/02/15/accurately-track-your-mains-frequency/

Depending upon where in the world you live, AC mains frequency is either 50Hz or 60Hz, and that frequency is maintained accurately enough over time that it can be used …read more (https://hackaday.com/2022/02/15/accurately-track-your-mains-frequency/)

Print-a-Sketch Turns Any Surface Into a Printed Circuit Board
https://hackaday.com/2022/02/15/print-a-sketch-turns-any-surface-into-a-printed-circuit-board/

Although powerful design software and cheap manufacturing services have made rolling your own PCBs easier than ever, there are some situations where a piece of FR-4 just doesn’t cut it: …read more (https://hackaday.com/2022/02/15/print-a-sketch-turns-any-surface-into-a-printed-circuit-board/)

First Days With a New Microscope
https://hackaday.com/2022/02/15/first-days-with-a-new-microscope/

For big-ticket purchases, I tend to do a lot of research before I open my wallet. I like to at least have the illusion that when I send my money …read more (https://hackaday.com/2022/02/15/first-days-with-a-new-microscope/)