Continuous Rotation Servo Motors with Firefly

Hello again all,

I know already this is a very difficult thing to do..

After spending the past few weeks exploring the different types of available motors and their use with firefly, I am working on a project that simply needs to use the continuous rotation servo motors to avoid using a faulty gear-box with a 180 motor. I am aware that that ease of using 180 motors is significantly easier with Arduino and the "Servo" preset of 1..179. However, I am trying to find the relation between controlling the position of a point for distance and time to actuate motors on a ceiling element.

Curious if anyone has had any luck translating a distance the same way with full motors as you would with 180 motors. Attached is the final I am working with, the attractor point moves with pistons seen in the file. Each one of the four pistons have their own motor, and it's easy to envision what I want done, but difficult to implement.

Any help in translating this motion would be greatly appreciated.

Thank you

Attachments:

GH Arduino fullservo.gh, 12 KB
ProtoModel_Kinect.3dm, 114 KB

Replies to This Discussion

Permalink Reply by Armin Seltz on April 14, 2015 at 6:49am

I think you would be better of using stepper motors. They have much more accurate and absolute value control. So knowing how much cable is on one turn of the motor you can convert distance to number of steps quite easily.

As far as I know continous servos are just time-based, so that will be really inaccurate.

There are lots of resources for stepper motors and you need absolute control and precision for repeatability of what you are trying to do. Stepper motors also have much wider speed ranges.

RSS