Motors cutting out

Hello you beautiful bunch
Hope everyone is well and looking forward to the festivities

I wonder if someone could suggest a fix
I've managed to get my 2dof wheelchair motor rig to work with lfs and simtools
But the motors shut down sometimes 2 laps in sometimes on the 1st corner

Now the the ibt-2s are cool and the motors are cool aswell .
If I unplug and plug the arduino USB the motors come to life and return to start position
Simtools also shuts down so I have to restart that aswell

I've read loads of FAQ and think maybe it's regen or something to to with amps
I've read about running 2 ibt-2s for each motor also there's placing a diode or capacitor across the psu or the motor terminals

So I have 2 x 200w motors from motion dynamics with 50:1 boxes also 1 ibt2 per motor running off of a single 500w led psu
I run the motors with tie rods to shoulder hight
Ctc levers 40mm or 65mm or 90mm
Also I will say I defo need to balance my top frame as its front heavy I will be adjusting this ASAP

1 more thing there seems to be a delay in response when it comes to the game
Gear changes are fine but rumbles and bumps seen to lag

I'll post some pics soon

And help and suggestion apriciated as always

Limited information but it sounds like the Arduino crashes rather than some sort of motor issue. Doesn’t seem likely that both motors would go.

Recently I added a flashing led into the main Arduino loop. This is pretty easy to do using an internal led and tells you immediately if the Arduino has checked out.

This could be due to PSU issues with the Arduino. Is the Arduino powered just from the USB or do you have a power supply going to the barrel connector on the Arduino?

Its only powerf by usb
It only seems to happen when there's a series of bigger movements
There isn't a disconnect sound until I unplug the arduino to reset it
The motors stop in what ever position they are in when it happens the return to the level start position when I pull out then plug back in the USB the led on the arduino are still on when it cuts out
The ibt-2s and motors are cool to the touch
I'm going to try again but try unplugging and plugging back in the plug i have on the pins on the ibt-2s

Thanx for your replies ill update my progress

Thanx for your reply NB interesting info ill try out all those suggestions later
My arduino is plugged into the front usbc and my peripherals into the front usb3 port illl try plugging the arduino into the back usbc port and the peripherals to the front usb2 slot

All you need to do is chop off the wire on almost any wall wart power supply and run power from the 12v motor PSU into the Arduino. If you have a 24v system you need a regulator.

Are you running 24v ?

No 12v
I find smc3 works fine with motion and sine shame there no way of running both motors for testing
It seems to be different things that happens sometimes it's 1 motor fails sometimes both sometimes I need to unplug and plug in arduino sometimes I need to restart simtools
Another thing I've noticed is when level on the track after a turn the rig is leaning to 1 side dosent level out but as soon as I quit out the game the rig levels out
Alot of that is probably me not setting the parameters up properly

Theres a couple structural things I need to adjust 1 is the way I've got the top tie rod ends connecting to the rig ill post pics easy fix but I also have to move my uni joint forward as the centre of balance is not right

I disabled USB Selective Suspend and downloaded device tree viewer
ive attatched the file

So do most projects use the power connector ? Or is it something to try incase there's a power problem over USB
The USB cable that came with the Arduino was real short so I grabbed a 3 metre USBc it was the only 1 I could find with the square plug on the end

I used to had a very similar problem where I was able to run just one motor , when I was trying to run the second motor both ibt-2 blowing,but I was running 24v. I fixed my problem using this motor controllers.

Mine cost me £2.90 and they're not blowing they seem fine not over heating sometimes 1 motor sometimes both but the ibt-2s seem ok I think its happening in the arduino sim tools shuts down aswell

Thanx for the suggestion though I really appreciate it

I will this afternoon

My uneducated guess would be that it is a regeneration problem. I had a similar issue when making an active brake pedal and solved it by placing a capacitor and large (over 20W) resistor in parallel with the capacitor between the power supply and motor. The idea is that the forwards voltage can go through the capacitor and it can help smooth out the voltage to the motor and when the motor brakes or reverses, you can get a large surge of voltage flowing back to the power supply. This was causing my one to switch into protection mode and turn off briefly. With the capcitor and resistor, the voltage instead can't flow back through the polarised capacitor and instead goes through the resistor, shedding the excess energy as heat thus protecting the power supply against the back voltage surge.

I'm not sure if that is a 100% accurate explanation as I'm a DIYer rather than actually knowing what I'm doing.

It's fairly inexpensive to try out this possible solution to see if it makes a difference.