High-Style Ball Balancing Platform

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 microcontroller development board you might expect. Instead, [Johan] designed and built his own board with an ATmega32 to run the three servos that control the platform. The entire apparatus is made from a dozen or so 3D-printed parts that interlock to form the base, the platform, and the housing for the USB webcam that’s perched on an aluminum tube. From that vantage point, the camera’s images are analyzed with OpenCV and the center of the ball is located. A PID loop controls the three servos to center the ball on the platform, or razzle-dazzle it a little by moving the ball in a controlled circle. It’s quite a build, and the video below shows it in action.

We’ve seen a few balancing platforms before, but few with such style. This Stewart platform comes close, and this juggling platform gets extra points for closing the control loop with audio feedback. And for juggling, of course.

14 thoughts on “High-Style Ball Balancing Platform

    1. hobby servos certainly have an incredibly unpleasant noise to them
      we can only hope that eventually they will all be replaced by near silent sensored brushless and stepper motors

  1. These videos should start with “what can it do”, followed by “how it works” and finish with “how it was made”. Partially revealing shots and heartful motivational music should be banned.

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