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Omni-wheel robot slides across the paper as a mobile plotter

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Omni-wheel robot slides across the paper as a mobile plotter

Arduino TeamMarch 8th, 2019

Retired maker “lingb” created an omni-bot, with four wheels that allow sliding motion in the X/Y plane courtesy of their perpendicular rollers. While that alone would have been a fun build, he also attached a pen, along with a servo-based lifting mechanism, turning this robot into a free-range plotter!

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The device is controlled by an Arduino Uno and Bluetooth module, and takes movement commands via a linked smartphone or tablet. Four 28BYJ-48 stepper motors with ULN2003 drivers move each wheel, though outputs are shared between opposite motors to save on I/O. 

This means that rotating the robot isn’t possible, but as shown in the video below, this isn’t needed to plot straight and curved lines with good accuracy.

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Website: LINK

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Written by Quad Oner

LEGENDS MAY SLEPP BUT THEY NEVER DIE

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