The usual go-to when building a simple robot arm is the ever-pervasive hobby servo ... With the addition of a CNC shield and an Arduino he had every thing he needed for the upgrade.

Built from mostly aluminum stock, [Kris] machined the bulk of his parts with a CNC mill which ... Though the majority of the arm is metal, the hand at the end of his robot was built with 3D ...

AI startup Hugging Face has released a 3D-printed robotic arm for $100, building on its existing robotics efforts.

SO-ARM101 "Arm Servo Motor Kit" is an open-source dual robotic arm kit that works with Hugging Face's LeRobot robotics ...