Two issues. Motor move in steps and shake.

[Greg1976]

Hi guys
Maybe somebody can help me.
I finished my first 2DOF simulator. But now during tests I have two issues.
First the motors do not move smoothly. They move like in small steps and this feels badly during playing games.
Is this a hardware or software issue and what to do to fix this problem?
Second. When i take a seat in the simulator it's beginning very little to shake. The motors trying to hold the middle position but because of my weight (90kg) i´m pushing the seat down. The motors again trying to adjust to the middle position.
Is this normal?
I got already info from sirnoname it could be because of the PID konfiguration. Or could be something else? My motors are 12V/160W/50rmp
The motor position is not so difficult to move by hand so I do understand the shaking. The electronic whant to keep the middel position and it is pushing up again.
Has someone an idea?

Thanks

[kevin123]

Greg1976 Hello, first of all congratulations for the sim, I like the tubular chrome you used them have already bought chrome, or have made them cromare later?

As for your problem, I wanted to ask you some questions:

1 What electronics are you using?
2 Have you tried with another profile?

[Greg1976]

Hello Kevin

My frame is made of stainless steel 304.
And the problems I could manage.
I change the settings in the x-sim software and the shaking I think is because I´m not using worm gear. The life time of worm gear is three times less than direct gearbox. I think it is this problem.

Thanks

Greg1976 Hello, first of all congratulations for the sim, I like the tubular chrome you used them have already bought chrome, or have made them cromare later?

As for your problem, I wanted to ask you some questions:

1 What electronics are you using?
2 Have you tried with another profile?