Meet the ZENrobot: a robot that draws patterns and shapes in the sand and relaxes you in the process. It can draw circles and spirals in up to 45 minutes depending on pattern complexity. Processing on a laptop is used to take care of that. Once the pattern is done, the ZENrobot cleans the sand bed to start drawing again.
More like this ➡️ here
ZENrobot 'Recreation in Slowness'
Seems like an interesting project for Arduino and robot enthusiasts. More info is available here.
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