Meet the Poppy Ergo Jr: an open source 3D printed robotic arm developed to teach kids basic tech concepts. It can be programmed using a web browser (with Python). Visual programming is also supported. The robot arm has 6 motors and comes with position and contact sensors. You can add more sensors to improve it.
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Poppy Education - Poppy Ergo Jr Overview (English)
The robot has a REST API, so you can use C++, Java, Matlab, Ruby, JavaScript to send it commands.
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