The error chain.massless-joint

user: the script can change it: the error says what happened in the experiment’s names, and what to write instead.

Where MIME gives it, with what its message says happened and what its action says to do ({…} is filled in from the experiment):

• in mime/dynamics/apparatus/_arm.py:

  • what happened: {…}'s moving joint{…} ({…}) move no inertia about their axes at the initial positions: the bodies they move have neither geometry nor an <inertial>, and the joints no armature, so the dynamic arm has no mass to move there

  • what to do: give each body it moves an <inertial>, from CAD or a measurement, or the joint an armature; or use the kinematic rung, Arm.Kinematic(...)

Reading an error and reaching its full traceback: reading an error. Every code: the index.