We’re probably all familiar with the Hall Effect, at least to the extent that it can be used to make solid-state sensors for magnetic fields. It’s a cool bit of …read more (https://hackaday.com/2025/04/15/shine-on-you-crazy-diamond-quantum-magnetic-sensor/)

Keebin’ with Kristina: the One with John Lennon’s Typewriter
https://hackaday.com/2025/04/15/keebin-with-kristina-the-one-with-john-lennons-typewriter/

Reader [akavel] was kind enough to notify me about Clawtype, which is a custom wearable chorded keyboard/mouse combo based on the Chordite by [John W. McKown]. First of all, I …read more (https://hackaday.com/2025/04/15/keebin-with-kristina-the-one-with-john-lennons-typewriter/)

New Brymen Bluetooth BM788BT Digital Multimeter Coming Soon
https://hackaday.com/2025/04/15/new-brymen-bluetooth-bm788bt-digital-multimeter-coming-soon/

If you’re into electronics you can never have too many digital multimeters (DMMs). They all have different features, and if you want to make multiple measurements simultaneously, it can pay …read more (https://hackaday.com/2025/04/15/new-brymen-bluetooth-bm788bt-digital-multimeter-coming-soon/)

Announcing the Hackaday Pet Hacks Contest
https://hackaday.com/2025/04/15/announcing-the-hackaday-pet-hacks-contest/

A dog may be man’s best friend, but many of us live with cats, fish, iguanas, or even wilder animals. And naturally, we like to share our hacks with our …read more (https://hackaday.com/2025/04/15/announcing-the-hackaday-pet-hacks-contest/)

A New Kind of Bike Valve?
https://hackaday.com/2025/04/15/a-new-kind-of-bike-valve/

If you’ve worked on a high-end mountain or road bike for any length of time, you have likely cursed the Presta valve. This humble century-old invention is the bane of …read more (https://hackaday.com/2025/04/15/a-new-kind-of-bike-valve/)

Making Parts Feeders Work Where They Weren’t Supposed To
https://hackaday.com/2025/04/15/making-parts-feeders-work-where-they-werent-supposed-to/

[Chris Cecil] had a problem. He had a Manncorp/Autotronik MC384V2 pick and place, and needed more feeders. The company was reluctant to support an older machine and wanted over $32,000 …read more (https://hackaday.com/2025/04/15/making-parts-feeders-work-where-they-werent-supposed-to/)

DIY AI Butler Is Simpler and More Useful Than Siri
https://hackaday.com/2025/04/15/diy-ai-butler-is-simpler-and-more-useful-than-siri/

[Geoffrey Litt] shows that getting an effective digital assistant that’s tailored to one’s own needs just needs a little DIY, and thanks to the kinds of tools that are available …read more (https://hackaday.com/2025/04/15/diy-ai-butler-is-simpler-and-more-useful-than-siri/)