Hi,
I’m currently in a situation where I need a continuous rotation servo/stepper motor to spin a dowel attached to a small foam prop at speeds of ~200+RPM (For a film’s special effect, it just needs to look like it’s moving fast) and at the end of the rotation period I would need it to reset to a default “starting position”.
The smaller the motor the better as I would like it to be wearable on the wrist. Could you suggest a device that meets these specs?
Thanks,
Derrick
Hi @nhanderr and welcome to our forum.
Since you want to wear this motor on your wrist, I would recommend using continuous rotation servo rather than stepper motor since stepper motors are usually bigger and heavier.
Continuous rotation servos usually don’t have position control, and their maximum velocity is usually around 100 RPM.
Maybe you could use this one from parallax:
It is a continuous rotation servo but it has a position feedback which you could use to know when your motor is in starting position. Also, it can have velocity in range of -120 to 120 RPM.
I hope this helps. Feel free to ask anything else.
Thanks! I saw the parallax but felt it’s RPM might be a bit too low. Would a D/C motor with a magnetic encoder be able to achieve what I am looking for then?
DC motor with encoder can be maybe a little bit heavy to wear it on the arm.
Also, you don’t have such control of it like for the servo motor. For sure it can get 200RPM but you need to check for to stop it efficiently at the same starting position.
Even the one here? It seems like it’s not too large; although I can’t find the weight of it unfortunately
