If IKEA made ball-balancing PID robots, they’d probably look like this one. This [Johan Link] build isn’t just about style. A look under the hood reveals not the standard, off-the-shelf ...

Which balance ball chairs are best? Sitting incorrectly can cause discomfort and affect your posture. Sitting on a balance ball by itself can be beneficial when sitting correctly, but it can be very ...

Imagine trying to balance a heavy metal ball bearing on a cafeteria tray. It’s not the easiest thing in the world! In fact, it’s perhaps a task better automated, as [skulkami3000] demonstrates with ...