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Compact 2-4 DOF

Discussion in 'DIY Motion Simulator Projects' started by Redcap, Nov 20, 2019.

  1. Redcap

    Redcap New Member

    Joined:
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    Hi all,

    For last few months I was thinking about building my very own motion platform...but so far it was in kind of dream realm (mainly due to lack of dedicated space) ... now I kind of come to conclusion: it's about time to wake up and finally do the thing.

    So I've sat down, done some initial reading, compared a bunch of the different approaches and I think I'm about to be ready to fail for the first time ... I mean ... to start my first prototype ;)

    The plan is to begin with standard 2dof setup and gradually develop toward sway and if Nm gods allows also heave. The main limitation I have is the current apartment setup ... whatever I will build it needs to be compact and should avoid drawing insane amount of watts.

    Load wise: it needs to pull 90 kg of me in VR + some casual controllers setup.

    That being said now I need someone like you to check if my initial thoughts makes any sense.


    Motors:

    Still looking around but for now there are two models that I find appealing that are currently available:

    Transtecno EC 180.240 with worm gear 50:1 (24V s1:180W 10,8A 19Nm, s2: 250W 15A 26 Nm, 60 RPM)
    Transtecno EC 250.240 with worm gear 50:1 (24V s1:250W 15A 26NM, s2: 350W 20.5A 38 Nm, 60 RPM)

    EC 180.240 seem more reasonable but I'm not fully convinced it will allow to handle the heave if I ever decide to have one.

    EC 250.240 while quite potent are a bit more expensive and if I ever decide to progress toward 6dof they will draw around 2000W.

    Power supply:

    One per motor MeanWell-RSP-500-24 or MeanWell-ERPF-400-24

    Drivers:

    While Sabertooth seems to be preferred drivers to go ... cost-wise they are not sensible option in my country.

    IBT-2 looks tempting but I see that many people complain about them after a while of the usage.

    JRK G2 seems solid choice ... available...kind of the plug&play ... but on the expensive side of things ... do they have any of advantages over Pololu G2 High-Power Motor Driver 18v25 used with arduino ... besides of obvious simplicity of setup?

    So... does it make sense so far?
    Redcap, Nov 20, 2019
    #1