The server specs of the AL5D arm look like the arm will support a forearm rotate axis (with the optional wrist rotate) to make a 6 axis arm.
So, the question is, why is that configuration not offered as a standard option?
I makes me think that the AL5D is in fact not capable of supporting the forearm rotate axis. That is, you could incorporate the axis, but the arm will not work effectively.
Am I wrong?
(By “effectively” I mean within the usual expectations of using servos and assuming the payload is just a few ounces.)
My guess is that someone from Lynxmotion would be better at answering your question as I am not really sure what you are asking. If you are asking why they don’t sell a standard configuration with a wrist rotate? If so the answer is probably because they have three different versions of the wrist rotate that you can choose from depending on your needs. For example if you click on the AL5D product with Flowstone, you have the standard buttons of Add it to your cart and the like and below that in the Related products, you have the option to add to it one of the three different wrist rotate options.
Sorry 'bout that. I will try to be clear this time.
As I understand it, I can get the AL5D with the optional wrist rotate, and the arm will have 5 axis.
But I would like a 6 axis arm. I see that the Low Profile Axis component of the Robot Erector Set would make a nice forearm rotate and thus a sixth axis. But why is that not offered as a standard option? Would it add to much weight to the arm?
Forearm rotation is definitely possible. Why don’t we have a full kit that uses it? Because we don’t have software that supports controlling it. Here is an old post that shows it. The arm had a counterweight to balance the load, but springs would work as well.
