Ask Hackaday: What Would You Do With the World’s Smallest Microcontroller?
https://hackaday.com/2025/03/17/ask-hackaday-what-would-you-do-with-the-worlds-smallest-microcontroller/

It’s generally pretty easy to spot a microcontroller on a PCB. There are clues aplenty: the more-or-less central location, the nearby crystal oscillator, the maze of supporting passives, and perhaps …read more (https://hackaday.com/2025/03/17/ask-hackaday-what-would-you-do-with-the-worlds-smallest-microcontroller/)

Repairing a Legendary Elka Synthex Analog Synthesizer
https://hackaday.com/2025/03/17/repairing-a-legendary-elka-synthex-analog-synthesizer/

Somehow, an Elka Synthex analog synthesizer made it onto [Mend it Mark]’s repair bench recently. It had a couple of dud buttons, and some keys produced the wrong tone. Remember, …read more (https://hackaday.com/2025/03/17/repairing-a-legendary-elka-synthex-analog-synthesizer/)

Recreating A Braun Classic With 3D Printing
https://hackaday.com/2025/03/17/recreating-a-braun-classic-with-3d-printing/

Braun was once a mighty pillar of industrial design; a true titan of the mid-century era. Many of the company’s finest works have been forgotten outside of coffee table books …read more (https://hackaday.com/2025/03/17/recreating-a-braun-classic-with-3d-printing/)

Turning Down the Noise on SMPS
https://hackaday.com/2025/03/17/turning-down-the-noise-on-smps/

On paper, electricity behaves in easy-to-understand, predictable ways. That’s mostly because the wires on the page have zero resistance and the switching times are actually zero, whereas in real life …read more (https://hackaday.com/2025/03/17/turning-down-the-noise-on-smps/)

Current Mirrors Tame Common Mode Noise
https://hackaday.com/2025/03/17/current-mirrors-tame-common-mode-noise/

If you’re the sort who finds beauty in symmetry – and I’m not talking about your latest PCB layout – then you’ll appreciate this clever take on the long-tailed pair. …read more (https://hackaday.com/2025/03/17/current-mirrors-tame-common-mode-noise/)

Simple Robot Assembled From E-Waste Actually Looks Pretty Cool
https://hackaday.com/2025/03/17/simple-robot-assembled-from-e-waste-actually-looks-pretty-cool/

If you’re designing a robot for a specific purpose, you’re probably ordering fresh parts and going with a clean sheet design. If you’re just building for fun though, you can …read more (https://hackaday.com/2025/03/17/simple-robot-assembled-from-e-waste-actually-looks-pretty-cool/)

DIY Your Own Red Light Therapy Gear
https://hackaday.com/2025/03/18/diy-your-own-red-light-therapy-gear/

There are all kinds of expensive beauty treatments on the market — various creams, zappy lasers, and fine mists of heavily-refined chemicals. For [Ruth Amos], a $78,000 LED bed had …read more (https://hackaday.com/2025/03/18/diy-your-own-red-light-therapy-gear/)

Writing a GPS Receiver from Scratch
https://hackaday.com/2025/03/18/writing-a-gps-receiver-from-scratch/

GPS is an incredible piece of modern technology. Not only does it allow for locating objects precisely anywhere on the planet, but it also enables the turn-by-turn directions we take …read more (https://hackaday.com/2025/03/18/writing-a-gps-receiver-from-scratch/)