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Question Solved: DOF H2 motors only spin one direction.

Discussion in 'Commercial Simulators and Peripherie' started by Mechromancer, Feb 24, 2023.

  1. Mechromancer

    Mechromancer Active Member Gold Contributor

    Joined:
    Aug 28, 2018
    Messages:
    135
    Balance:
    444Coins
    Ratings:
    +48 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, Motion platform
    TLDR: can anyone who upgraded the H2 gearboxes to the SFUs share their SMC3 settings please.

    So did the upgrade on the H2 gearboxes and the exchange went smooth.

    However, I can't seem to tune the motors in SMC3.

    On the SINE wave the motors go FORWARD on the up-wave and just pause (they don't go BACKWARD) on the down-wave, THEN, they continue FORWARD on the next up-wave, eventually running to the top of the worm rod.

    My H2 is from 2018 and DOF said I didn't need to do the firmware upgrade.

    I'm on Windows 10 x64.

    Obviously, my old gearboxes worked fine...other than the "lash" problem

    Help please!
    Mechromancer, Feb 24, 2023
    #1
  2. zapata_h

    zapata_h Active Member

    Joined:
    Dec 25, 2013
    Messages:
    221
    Occupation:
    Industrial Maintenance Manager
    Location:
    España
    Balance:
    307Coins
    Ratings:
    +43 / 0 / -0
    My Motion Simulator:
    3DOF, AC motor, Arduino
    If it does not reverse the direction of rotation, check the connections
    zapata_h, Feb 25, 2023
    #2
  3. Mechromancer

    Mechromancer Active Member Gold Contributor

    Joined:
    Aug 28, 2018
    Messages:
    135
    Balance:
    444Coins
    Ratings:
    +48 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, Motion platform
    I appreciate your answer, but which connections? It's getting power, so it doesn't seem it would be the power cord. I didn't mention that when I manually rotate the motor/gear coupler, the sensor does rotate and moves the green line up and down in SMC3, so it doesn't seem to be the sensor connection.

    I'm certainly no Arduino expert, but it seems the unit is not sending the signal to reverse the rotation OR the connection (as you mentioned) might be at the Arduino board, which I checked for "loose" or disconnected wires, but found none.

    It's weird that DOF told me the H2/H3's don't need the firmware update, but their PDF instructions for the upgrade say otherwise.

    Thanx again for taking the time and your suggestion. I will re-double my checks for bad connections.
    Mechromancer, Feb 26, 2023
    #3
  4. Mechromancer

    Mechromancer Active Member Gold Contributor

    Joined:
    Aug 28, 2018
    Messages:
    135
    Balance:
    444Coins
    Ratings:
    +48 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, Motion platform
    Without going into all the gory details, it turns out the problem was SMC3. I hadn't used it in years after I had fine tuned the rig.

    It always worked before, but something (probably a Windows update) broke the motion test part of it. It still updated the actual settings correctly, which is why I didn't suppect SMC3 and was looking at other possible causes.

    For some wild reason (and desperation) I tried using the SimTools "Output Test" and the motors responded correctly.

    Just something to try if you have a similar issue.
    Mechromancer, Mar 2, 2023
    #4