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Looking on the online robot shops I’ve seen that are sold the vibration motors. Then I said to myself: why not build a simple robot with a nice vibration motor? And so I tried to think of something original and super cheap. I went into the shop of my friends Chinese to make me some inspiration, and I found something very very nice: a vibrating massager. I disassembled the massager and made a little robot. This is the result: http://robottini.altervista.org/robot-shoe-brush
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/robot-brush