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All right, so I have got some animation in here, and I've constrained the cylinder to the room on Frame 1, and you'll see actually if the cylinder is selected I've actually got a keyframe there. That's an indication that there is some data in that frame. And what that is actually is a target for the Link constraint, and I can see that in the Motion panel. Here we are in the Motion panel and I've got the Link Parameters rollout visible. So what I want to do here now is go forward to the point in time where I want the robot arm to actually pick up the cylinder.
So let me get in a little bit closer on that. So sometime after those claws close, but before it starts moving up, I want to transfer the link to the wrist, instead of the floor or the room. So here I am. I am on 2 minutes 22 frames. In the Motion panel I am going to click Add Link and then I want to click on the robot's wrist and transfer the linkage to that object and that's happening on frame 82 as we can see here.
All right, so let me rewind this and play this back. Cool! So it's actually connected. Now it's staying connected. That's fine. And when I want it to drop, I'll transfer the linkage back to the room. So get in a little bit closer on that.
So when do I want it to drop? Right after those claws start to open. So right around five seconds and four frames. I've got Add Link still active here, and I'll just click on the room and I just transfer the linkage back to the room. So now when I play this further, it's no longer linked to the arm during that period of time after Frame 154. So rewind and play this back, see what I have got.
All right, so that's pretty good. I do want to mention that you're going to have the best results if you animate your character, or in this case robot, before you start doing any of these Link constraints. It's just going to be much easier for you to wrap your head around. So that's what I'm doing in the Motion panel. If I need to I can change the start times of these by just selecting and then changing to a different value, but I am pretty happy with what I have so far.
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