Hey there everyone,
I’m new to this sub and excited to be here! I’ve been a hobbyist for a while now but I never delved too deep into the whole motor game- I usually could rely on simple singular servo controls. Feel free to tell me I’m an idiot, I already suspect it.
Now, I’m trying to get two continuously rotating servos to sync up. Essentially what I have is a ball sitting on a hole cut out of some acrylic, and the two servos sitting just under the ball so that the wheels, which I’ve lined with rubber bands for grip, can push the ball from under it, making it spin in place. I want to be able to rotate it up, down, left, and right. This means that the servos need to be in sync when spinning in the same direction, or in opposite directions. If they spin at different speeds at all, the ball starts rotating in ways I can’t predict or control.
How can I make these two servos sync up? I’ve looked at stepper motors, but I suspect they’re not necessary for my needs, as I don’t need to know position- just speed. I understand they can control that better as well, but I’m just skeptical that I need it. I’m looking at stepper motor drivers which I can see could be used on continuously rotating servos, but I’m still not totally certain of what they even do. Fine tune control? Do they make sure two servos sync up? I don’t think so.
I received some advice from a hobby shop that a y-harness jumper would do the trick, and when I mentioned the servos spinning in opposite directions as well, he mentioned something about an aileron, which just completely confused me.
Can anyone help me grasp this concept a bit more clearly? I can do all the googling in the world for days but some things are just easier to understand through dialogue.