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Yet another controller board

Discussion in 'DIY Motion Simulator Projects' started by Aerosmith, Aug 1, 2024.

  1. SpeedyBee

    SpeedyBee DIY 3DOF, AC Servo Ball Screw Drive

    Joined:
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    My Motion Simulator:
    3DOF
    Good idea, the requirements are different from a CNC machine where you prefer to have each axis homed individually so as not to distrubt each other when the end stop is tripped. In a motion rig you need to think about the person sitting in the chair whilst homing.
  2. Aerosmith

    Aerosmith Active Member

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    My Motion Simulator:
    3DOF, AC motor
    Yes, under normal conditions you only have to execute the homing once per session when you switch the controller on for the first time. We have the main switch outside, at the control cabinet at the rear of the rig. So nobody sits in the cockpit. But if you have to recover from an emergency stop, power failure or any other type of error condition you should also be able to execute the homing while sitting in there.
  3. Aerosmith

    Aerosmith Active Member

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    My Motion Simulator:
    3DOF, AC motor
    Serac-installed.jpg
    Yesterday, we installed the controller with the new 3D printed casing. The ratsnest of wires hasn't got much better but it looks a bit cleaner and is at least safe to operate.
    State-offline.jpg
    The improved homing procedure also works quite well. The controller currently has no online/offline switch but instead cross fades the position automatically from the parking position to the center position when FlyPT Mover connects. This folows the rule "make it as simple as possible". But probably a door switch would be even better. The rig would then go down to the parking position automatically when the door is opened without the need to flip a sepearte switch or to disconnect the Movoer output.
    State-running.jpg
    • Like Like x 2
  4. Aerosmith

    Aerosmith Active Member

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    self employed
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    My Motion Simulator:
    3DOF, AC motor
    @Motion4Sim I just saw this video. Can you explain a little more in detail what has changed in the new firmware and what you did to improve smoothness? I still have one of your controllers. (It's on the marketplace but nobody has bought it, yet) Maybe I'll use it for the heli project...

    BTW: I have AASD servos from @Klaus Schmidinger so no trouble to be expected, this time.
    Last edited: Sep 25, 2024
  5. Aerosmith

    Aerosmith Active Member

    Joined:
    May 30, 2024
    Messages:
    228
    Occupation:
    self employed
    Location:
    Germany
    Balance:
    1,332Coins
    Ratings:
    +119 / 0 / -0
    My Motion Simulator:
    3DOF, AC motor
    Update: I've made a new PCB layout which has 6 instead of 5 outputs for servo axes. The boards have just arrived. I'll assemble at least two for my own 6DOF rig and Sven's next heli sim. But if anyone else is interested I could make up to 5.
    NewPbcs.jpg