I have a rigged robot. I want to animate it so, that when I rotate or move the bone above the head, named EarMover, the EarRingL and EarBallL will move to the side. I set up an action for this movement. The EarRingL and EarBallL move to the side and back over 40 frames. Now I need to attach the action constraint to the EarRingL and EarBallL bones so that when I rotate (or move) the EarMover bone, the Action will get played.
This is what I don't know, how to set up this action constraint so that one triggers the other?
I'm attaching a screengrab and the blend file. It's educational material for me, based on a freely available tutorial, so it is open-source. You may reuse it freely.