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Question Stepper motors for linear actuators

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by early_m, Oct 22, 2018.

  1. early_m

    early_m Active Member

    Jul 28, 2016
    +217 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, Arduino, Motion platform
    I've built a G-Seat and I'm tempted to improve on it by adding some full motion in the way of linear actuators.


    I've searched about but still confused about which motors I can use. I'm looking to keep this as cheap and cheerful as possible.

    Servo motor's such as that used here https://www.xsimulator.net/communit...h-4-x-750-watt-linear-actuators-100-mm.11969/ are just too expensive for me and they quote each actuator at 400 euro.

    It looks like Nema stepper motors are a popular choice (Nema 23/34) but they come in a range of models offering a range of holding torque options. Price for a Nema 23 3Nm with driver @ £54 is a tempting price to pursue the project.

    I have 2 options:

    1. A 2DOF seatmover style - seat attached to a universal joint. 1 actuator for roll, 1 for pitch.
    2. A d-box style actuator with 4 actuators in each corner of my frame.

    Would the nema 23 3Nm with a 10mm pitch ballscrew work for either of these setups? oOr even a 5mm pitch?

    And am I correct in thinking the actuators will need limit switches and pots? If so do I then follow the same principle as any other rig using stepper motors. I was looking at Ardunio and Sabertooth setup, but I take it I wouldn't need the Sabertooth as the motors have their own driver?

    Sorry for all the noob questions, so much to learn!

    Thanks for your help.
    • Like Like x 1
  2. Ads Master

    Ads Master

    +0 / 0 / -0