Arm Control Help

[Kevin Sevcik]

Originally Posted by Alan Anderson

Step one: compensate for the arm's weight mechanically. Add a bungie cord, or a counterweight, or a gas spring, or anything that will take the constant load off the motor.

Then you can proceed to step two, and use the motor just to move the arm from location to location without worrying about gravity.

Second option is to just gear the arm down enough that the motor doesn't see the load much. If you're driving the arm with a Versaplanetary gearbox or something, adding an extra reduction stage might be easier than counterbalancing.