SMC3 Arduino 3DOF Motor Driver with SoftStart

My first two steps to troubleshoot would be to try bound rate 460800 and lover the com port to less than 10.
Bound rate depends on the serial chip being used on the arduino board. If it is ch340 then 460800 would be a way to go.

CH340 supports common baud rate: 50,75,100,110,134.5,150,300,600,900,1200,1800,2400,3600,4800,9600,14400,19200,28800, 33600,38400, 56000,57600,76800,115200,128000,153600,230400,460800,921600,1500000,2000000

I uploaded the soft start to my Arduino.
Startup the Arduino and only motor 1 and 2 are moving forward, this is what I have in SMC3

Motor 3 is not turning at all..
What could be the problem?

What exactly do you mean?
Reversing the + and - of the motor only makes the motor turn the other way. This is what the IBT2 does, isn't it?
Could it be that the wires need to be connected differently than described?
The Arduino code states:

o|7 Motor 3 ENB
o|6~ Motor 3 ENA
o|5~ Motor 2 ENB
o|4 Motor 2 ENA
o|3~ Motor 1 ENB
o|2 Motor 1 ENA

3, 5 and 6 are PWM.

But the connection says:

ENA ----> IN1/RPWM
ENB --+-> EN1/R_EN
+-> EN2/L_EN (ie connect ENB to both R_EN and L_EN)
PWM ----> IN2/L_PWM

ENA should be PWM? Or not?

I did try it but then my motors will turn the other way. They continuously turn in 1 direction. My hall effect potentiometers are 180 degrees, so the signal will go from 0 up to 5 volts and back to 0.

@gaboff_k suggested that my IBT_2's are broken. So I will replace those upcoming week and start over.

Hi bro i try your code and set ssloop to 100 until 500 but first start still same very fast.
And also when i set pwmmax exsample 150, and save the value after that i close the smc3 and open again the pwmmax become 11 sir, its bug or i wrong setup sir?

The same thing happens to me too: I set SSloop to 1000, soft, linear movement. When I open SMC3Utils, in PWMmax the value of 150 becomes 12.
It's a bug in the code, it would be good for the creator to fix it..
However the PWMmax value, even if I read "12" is 150.

Any news on the fix for the values not saved bug? Does it save values for everyone and the bug was a glitch or does it really not save anything for everyone? I'm trying to figure out which SMC3 mod I should use for my new 6DOF build, and I'd like a soft start...

somebody did code a soft startup code that should work

Is it this one? https://www.xsimulator.net/communit...op-and-support-for-dofreality-h6-and-p.17630/

It's hard to figure out which one works because there's not much feedback...