There is no better way to learn about robots and Arduino than building and playing with your own Arduino robot. LittleArm is a low cost robot arm for STEM. You can control the arm using an Arduino Uno. The robot has a modular gripper. It is an open source project.
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Quick Intro to Training 3D Printed Robot with GUI
Want to program your LittleArm? It can be done using Python. More information is available on Kickstarter.
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