Arm-Bot: 3D Printed 4-DOF Robotic Arm Arm-Bot is a handy and | Automatics & Robotics & Arduino

Arm-Bot: 3D Printed 4-DOF Robotic Arm

Arm-Bot is a handy and portable 4DOF robotic arm that can be used for fun and educational purposes (basics of Forward Kinematics and Reverse Kinematics as well as 4-bar linkages joints).
The design is such that the joint 2 and joint 3 are made as 4-bar linkage mechanism joints whereas the joint 1 and joint 4 are simple rotatory joints. It is a Spherical configuration robot.

Do it yourself https://www.instructables.com/Arm-Bot-3D-Printed-4-DOF-Robotic-Arm/