Thor – Another nice 3D Printed Robotic Arm

thor has attracted another nice robotic arm project to it’s site.  This is arm is a very nice, open source design that makes clever use of a differential to combine 2 degrees of motion into a single joint.  I also appreciate that he was good enough to go through the inverse kinematic model that defines this arm.  Inverse kinematics is a mathmatical method to figure out arm angles required for the end effector (the gripper in this case) to be in a certain location.  More at this link

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