The robot arm kit with 6 degrees of freedom (5 joints + clamp) ROT2U 6DOF is an excellent kit to start the learning of robotics on Arduino or Raspberry Pi. This kit made of aluminum plate comes with 6 powerful servomotors type MG996R. They make it possible to obtain a rotation angle of 180° on each articulation. They can be replaced very simply by a 360° servomotor such as a JX PDI-6221MG or JX PDI-HV5932MG to rotate the clamp on the wrist axis for example. Follow this tutorial for the editing steps.
Robotic Arm Kit at the best price on Banggood
Robotics kit ROT2U 6DOF deals
Most components can be purchased separately in case of failure