yeah sory but my english is not so good
What do you mean the "turn arduino"? - I can't see how moving the Arduino board could have any effect.
i mean when i plug usb cable and arduino is turned on
What do you mean by "start to move this motor"? - do you mean that you have to start it rotating by moving the motor shaft with your fingers?
no no, i mean when i hold button which is responsible to rotate the stepper
Does the difference between 200 and 2048 have anything to do with the problem?
no i just change te steps per rev cause i was check other stepper.
What exactly do you mean by "when i plug in power supply, two steppers works (myStepper(2048,8,10,9,11))," - how could they work without the power supply?
i mean extra power supply, usb cable, and DC 12V
And what does "this stepper only have trouble with smoth move" mean? - which motor, what sort of move does it NOT have trouble with?
motor on pins
Stepper myStepper(2048,8,10,9,11);, its not smoth, for example it makes half rotate than two steps back, propably some noises (or problem that always two coils of this stepper are HIGH position)
This "But after few actions arduino start to overheat and restart." makes me wonder if you are trying to power the motors from the Arduino. Don't.
I was thinking for that is plug in on arduino to get power supply and get it from VIN port. But if i am wrong i will change it