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.
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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