drtikol's 2 dof Seat shaker

Hey Drtikol, are you saying you need to connect from the output shaft of the motor to the pots and are looking at going in from a side of the motor that has a cover? It's not quite clear at least to me what you are asking.

The connection to the pots should be low torque. Pots are generally easy to turn so any connection between pot and motor shouldn't need to be too beefy but should allow for misalignment if you have some. One thing is if the parts flex a lot, you can get fatigue failures. Another thing is with pots, if you get the direction wrong and the motor runs away first time, it can damage the pot. Just a heads up, but many seem to use Hall effect transducers instead since there generally aren't stops and some don't even have input shafts. You just affix a special magnet to the output shaft of the motor.

But maybe some kind of sequence of photos that show what you are wanting to connect to what and how would make what you are asking more clear?

Thanks for your note. I've done a bit of nasty photoshop to sketch my situation, hopefully it's clearer now.

Hi there, a bit of progress here. A friend of my uncle (my uncle represents metal working skill and experience - my construction guru) appears to be a lathe hand and solved my mounting pots issues in 15 minutes.

And the same day even the construction work moved on. Motors attached to the frame. U-joint is impractically large and would required additional material to mount it to the bottom side of the seat so decided to get smaller U-joint (scrapyeard for 10 euro available) so hopefully it will work as well.
Leading shafts to be replaced by stronger ones most probably connected by Ball Joints.

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It looks like Windows mobile isn't the greatest device to post udpates here..
Anyway, pots mounted to motors. JRKs waiting to be utilized, can't wait to test them!

@eaorobbie here:
https://www.xsimulator.net/community/threads/playseat-to-2-dofseat.5401/page-2#post-56352
and after complete setup i try to test motor.
Hit the Set target and motor start to move but it doesn't stop anywhere and just goes around again and again with weird jumping movement when out of Feedback range.

continue with pictures of JRK settings and video (hopefully):


any ideas what's wrong guys?
Thanks for any advise

Do I need to answer "No" to show everybody how stupid I am?
Thanks for it @noorbeast I can't wait to get home(I'm on my way to work now) to try.

Hi, so I tried to set lever to 50% before clicking "Learn" in feedback section but no change. I decided to do a re-do of soldering/connections between JRK/pot/motor just to be sure. Additionaly I'm going to try swap cables between JRK and Motor- hopefully can't damage anything?

So after couple of days of trying I was able to move one motor by the Feedback slider in the JRK application - great satisfaction for me:


great motivation boost for me BUT I was about to add second motor and hasn't been able to replicate it anymore. Looks like some short circuit or bad soldering (which wouldn't be a surprise) so decided to do complete re-solder once I have a free time.

But now I know it's there!

Got some fundings so Motion Dynamics motors ordered, delivered (after crueling 7 weeks) and mounted to the frame. Now get JRKs moving.

Time has come to reborn my project.let's go then..

Finally (again) got some time to move forward. Determined to complete to construction soon to allow me to focus on electronics/SW

smooth movement so far, may be too robust, but holes in the joint fit dimensions

Little bit of progress again today. Construction complete except levers.

Doing some progress (huge motivation boost for me actually) as mechanics looks now OK. Had to do some adjustments in terms of motors fastening to the frame, their orientation etc.

Closer look at the lever movement.


Do I understand correctly that the video shows expected movements -up and down ?

And some pictures:
1) center position
2) Max up
3) Max down (may be not Max, could be little lower)