Bastiuscha's 2DOF project

Here are the settings. If you miss some, i give you more.
A and B Axis, are alwas the same.




The special settings, i leave all like this:


Thank you much for your link! I will exact study this.

I use the racingmat code. I changed this values:
int Tol=33; // old 20
if (gap>50) pwm=180; // old 215

Yes, i know, "dir" means direction. By the way, is a rc helicopter control circuit, working on a similar way. All Motors drive in a correct way. Sway works correctly, because one motor is mounted 180 degrees.
I have only the this problems:

"sometimes, i accelerate and only one motor moves"
"And somtimes after a corner, the arms don't find the correct position back"

I can understand a little bit this arduino code. The code is awesome... but i'm not good enough, to optimise that, for my hardware problem. And faithfully...i believe to optimise simtools, seems to me , is a bigger chance to become my wanted result.

Ah and thanks for the B-Axis Information... it was not plausible for me, why i all the time i used this. In the 2dof tutorial it was used. Maybe my english is to bad and i miss understand.

Today i will create a new clean motion profile and play with all values..maybe i become a better result. Can't wait to build my seat.

Edit: in an extreme case, i will change my motors. Maybe a wreeking yard is change my new motos in good used motors. But this step will be the lastest.

I played yesterday with all values and i think, it is better now! I will test this motors on my seat, and then i (we) will see.
But also yesterday, i finally cutted my profiles for the ground plate.



Today, i will assemble the complete groundplate. I'm so exited like a child on christmas! Hopefully this week arrives my cardan shaft.... then i can see the ready motion seat in the horizon.

Hey @Bastiuscha, it's way fun when those packages of struts, fittings, and bolts show up! Takes me back to my old Erector Set days!

I learned the lesson a few times of captive nuts. It sucks to get a frame all built only to realize you can't get some captive nuts you need/forgot into place without some disassembly. Also, fabric cargo strapping is handy to pull the frame pieces up tight against each other before tightening the fittings.

Looking good!

Hehe! I like my profile system...it's like lego.

And NOW... this is my groundplate in my first configuration. Some little things i will optimise and the motor mounts / linkage will be optimised in the next steps. The profiles are 45mm x 90mm.



Also i have cutted the profiles for the upper plate. That i will build today. This profiles are 45x45mm.



And 1 hour ago, my cardan shaft is arrived! Now my puzzle parts are complete...that will be a long week. I will show you every day, the pictures of the result.

Aaaand here it is! The upper platform.



And a first test with my playseat frame.



I also cutted and welded my cardan. This is my first welding, since 13 years. Not beautiful, but i think, it's good enough. The cool thing on this part is, it is easy to plug in and off. It is only a wrapped connection. Today i will paint the plates in silver.




At the moment, all is good. Tomorrow i assemble all parts. Can't wait for the first ride.

Huhu!!! Non stop day and night working pays off.

My cardan! Like i said, is easy to plug in and out.



And my complete motion rig!



Sorry for this bad picture. Later i bring this rig home and then it's phototime. The workshop here issn't a good photoplace. Tomorrow i will do some electric things, like emergency stop. And then i will beginn optimise the pivot and other mechanical things. And also simtools. I will record a video of the first movings for you!! I think tomorrow...

And here is my Video with the first moving of my rig! I'm happy...it works! Now i can optimise the settings.

Video:
https://www.dropbox.com/s/q7hsbd0kkmnpgcf/my dof2.mp4?dl=0

At the moment i play with the values of simtools. Can somebody tell me degree's what make sense? At the moment, i have 5 degrees on sway and only 2 for surge. I think, it's to small. what do you think?

No, that i don't mean. I mean that is the maximum, what gives my mechanic at the moment. Sorry i should explane better. But now i changed this...the maximum mechanical degrees is now 8, on every axis. Later i will of course, create a nice motion profile.

Ah ok, thank you much!

Now a small picture story, of my installation at home.





Basshaker.






I tested and how it's on the picture maybe you can se, the lower plattform is to short. In the front, it must be 50cm longer. On fast moves, the lower platform tilt a bit forward.

And the motors are not really proper. They are much to fast, i become a jitter loop, that i can't stop. If i go down with the power in the code, then the jitter is away, but they are to weak, to move the seat with a person. The next thing is the motor holding force. This is much to weak. Is the system power-off, i can easy move the upper platform. This is not helpfully in the jittereffect too.

Now i'm not really sure, what i can do else, then buy other viper motors. Maybe i can try to make my viper linkage arm shorter.

looks pretty cool mate ,,,, you probably just need to fine tune your smc3 settings ,,,,, take a screen shot and post it up so folks can give you advice on what might help reduce that jitter

Hey thanks! I'm not really sure, what you mean with "smc3 settings", but in post number #22 in this thread, i have post my arduino code and my tool settings.


Edit: ahh you mean my arduino, i think.

He means the SMC3 Utility program

This



EDIT: I see your not using SMC3, ignore me lol

Sorry Bastiuscha ,,,thought you were using the SMC3 program,,,

Is it possible for me, to use this, with only two motors? Do you think, smc3 could make that better?

Or is any german guy here, that could recommend me a shop with good 12V motors?