When it comes to rotary encoders, there are plenty of options. Most of them involve putting a credit card number into an online vendor’s website, though, and that’s sometimes just not in the cards. In ...

3D printed holder mounted to bike wheel, fitting precisely 38 magnetic spheres around its perimeter. Tedious math? Not if you make OpenSCAD do it. Off-the-shelf components are great; the world and our ...

Getting your Trinity Audio player ready... Denver-based Zen Magnets had to destroy 400,000 magnetic balls to comply with a Consumer Product Safety Commission order. The company marked the occasion of ...

Some 95% of microbes remain mysterious because they can’t be grown in the lab. Yet researchers are keen to study these organisms and the potentially useful compounds they make. Tiny, semipermeable ...