Question Help to diagnose 2DOF crash.

is this what you did?

Oh thank you for this wiring diagram.
Now I understand how i have to ground pin 8.
No, at the end i havent done it till now.
It seems to work correct by then, because i changed the settings. My directions ( orange ) were the problem. With this settings on the pictures it is working well with baudrate 500000

And in the game engine I limtited my axes to 90 percent

how do I change that? pin 8 on the ardunio R3 to groud and than reset button on the ardunio board?

I know this is an old post but im new here. Had my chair working reasonably well but it was under powered. Upgraded to the sabertooth from the ibt-2 and now i get a constant jitter. My smc settings are far different just to get it to boot up and now it goes crazy 5 min into a race. I tried the solution you noted and maybe im missing something. Setting simtools to 115200 it stops responding all together. I put a jumper on pin 8 to ground and smc will no longer boot. What am i missing?

Hi, sorry, this is my first time posting so I dont know the SOP.
I have a screen shot with the sine.
Things I have tried today -
New pots (180 degree)
new ardino
completely re-wired
windows 10, then windows 11, then back to 10 (all fresh installs)
new psu (upgraded to a mean well designed for dc motor handling)

issue is a small crunching noise all of the time from the motors, like the motors are never sitting still or parking. The issues is worst if i increase pwmin or kp.

Current screen shot shows a semi working setup however recently and for no reason at all, one of the motors will go to max and lock up or it begins to occilate like crazy. Reseting the motors only does not work and I have to reboot the entire ardino.

HELP. im ready to toss this out a window.

Thanks

Thanks for the reply. I have changed the fpwm throughout the ranges but it didnt really seem to help. What would you suggest for that setting? I have tried kp 100-160. After 160 the chatter/jitter comes back with vengeance. It doesn't seem that smc is hitting limits. Instead of a motor going limp, it gives full power and locks in a max position. I have to fully restart the system for it to release the power to the motor.

I was running much higher kp, min and max with the IBT-2 but i was having overload/drop out issues so I upgraded to the sabertooth. This is kinda when this oscillation issue showed up and I had to lower all of the power settings, however it was still playable. Now it randomly oscillates violently, or it will randomly slam max limits at full power. I used the walk through with the sabertooth but maybe there is a setting that I should change on that?

Thanks

Im not sure if you fully read everything but Ill give you a summary - The chair worked. It worked decent. Recently, it stopped working. Either the motors will go into insane vibration mode or they will lock in opposite directions. I recently upgraded to a sabertooth from the ibt-2 boards. This changed my smc settings considerably but still got it to work. (required way less pwmin to run and kp went from 350 to 150) Currently, with this issue, I have tried - New hall sensors (both Cahtl and the black generic ones 180degree) - no change, New power supply - No change, Re-installed windows and all drivers - No change, Designed and 3d printed new sensor mounts thinking they where too ridged - no change, Re-wired entire system - No change, New usb cord to the aurdino - No change.

As posted above, there is some way to force a different bald rate by grounding pin 8, so I ran a wire from pin 8 to a ground on the aurdino - No longer would boot. I also tried to change the bald rate in simtools 3 from 50k to 215000 as suggested earlier in this thread - motion no longer worked in testing...

My current thoughts are the motors are going bad or the new sabertooth board i got is defective but im happy to make any changes that someone can suggest. I am just in the weeds at this point.

My chair is the 24v jazzy motors from amazon, a mean well 600w dc motor rated power supply, sabertooth 32 driver.

My computer is a ryzen 5950x, 32g ram and 3090.

I have 2 of the 2x32 and I have the same issues as you. No matter what I do they will just go mental at random.times. eventually I just gave up. I couldn't trust them. I had them at 500k and 115. It was better at 115 but it would still flip out on me for no reason. Mostly it just stopped and you had to reset the whole thing but sometimes it would go crazy too.

Now with new drivers I really don't have any issues. I can't remember the name right now and I'm not at home for the next few months but I'll try to sig them up but they have been really good

Edit. https://www.xsimulator.net/community/threads/blame73s-2dof-seat-mover.6029/page-22#post-198335

https://www.google.com/amp/s/www.cytron.io/p-30amp-5v-30v-dc-motor-driver

I ordered the Cytron drivers, they will be here this week. Do you have a link to the setup for these? I have done the ibt and sabertooths but im assuming there is something new/needing changed in the code for them to work.

Thanks ahead of time.

The setup and ardunio file is in the first link on my post but ill repost it for you
https://www.xsimulator.net/community/threads/blame73s-2dof-seat-mover.6029/page-22#post-198335

Sorry, and thank you. I was trying to get the other controller working and it may have overloaded my motors so I was very frustrated yesterday and just shot off the reply without looking...

Again, thanks for your help and suggestion.

Hey friend!
I was reading the information and i saw the part about the battery in parrell? I have a 24v system, do I have to add a 24v bttery for this to work correctly? and can 1 battery work for both motors?

thanks again

I see its recommended. For myself i've not had any issues running it directly from the PSU. I've done 12v and 24v

Im not sure on the battery connections.