Learn how to easily build a robot arm using Arduino and 3D printed pieces. ... You will harness the power of potentiometers to control the arm’s movements with precision, ...

The robot arm is controlled using a touchscreen application loaded onto an old smartphone hose inside a control box, making the design of the robotic arm completely self-contained.

I just want to flag this one, an arm aimed at students: the Braccio ++ kit, for an introduction to robotics, letting you lift, place, twist objects under digital control... Braccio means arm in ...