I’m linking two servos, much like the linxmotion arm, the only difference beeing that they are digital servos; HSR-5995TG. I have found that even when properly aligned the two still have positions where they fight. I took about 15 measurements and found that to get them to stop fighting at various points along the rotation I had to adjust one’s position +/- 6 muS. While this doesn’t sound like much, the servos are strong enough to slightly bend the metal plate under them and heat up.
Are these results typical? If so, I’m thinking of using servo savers as one way of getting a bit of slack between the two. Has anyone tried this before?
I’m also wondering, we have a rather heavy arm. Are there better servos, or something similar, to use for the base joint?
We routinely share a shoulder joint with 422’s 475’s and 645’s. They get along wonderfully. But the only way to properly share two powerhouses like the 5995 or similar is to continuously monitor the current draw on both of them and adjust one’s position to balance the current draw on the two servos.
Part of the problem is that they’re so sensitive. I tried this by hand, there are unfortunately times when the 1 muS isn’t enough to align them. I found a few positions where there was no point where they wouldn’t fight.
I’m also worried that even if I do adjust their position based on the current draw that I can’t do this quickly enough while the arm is moving. This is going to make the servos heat up and make the arm far less useful.
But the only way to properly share two powerhouses like the 5995 or similar is to continuously monitor the current draw on both of them and adjust one’s position to balance the current draw on the two servos.