PLEASE, STEPPERS MOTORS ARE NEEDED.
Agreed. Been asking for stepper motors for a while now.
Please add step Motors
Thanks
Where are the stepper motors?
Need basic steppers.
The same problem, PLEASE, ADD THE STEPPERS !!!
Please! Add some stepper motors!
Please add stepper motors
Ditto.
Just need two generic 2-phase instances, one with 200 steps per revolution, the other with 400 steps per revolution.
BOTH with encoders and zero-index.
The math behind how they work is pretty simple for an ideal-model stepper:
https://en.wikipedia.org/wiki/Stepper_motor#Bipolar_motors
https://www.elprocus.com/stepper-motor-types-advantages-applications/
http://hades.mech.northwestern.edu/index.php/Stepper_Motor_Theory (If you want a model which handles both unipolar and bipolar, see last paragraph of this link.)
Internal logic:
Behavior:
In the stepper model, you increment or decrement the stored Angle based on the step size, and step size is controlled as described in Behavior. The degrees-per-step is trivially calculated from the steps-per-revolution.
EncA and EncB values are trivially calculated from the Angle, Enc pulses-per-revolution, and the presumption that at zero degrees EncA == EncB == 0.
Index state is trivially calculated from the Angle, index pulse width in degrees, and the pulse direction as described above.
Initial state of stepper is indeterminate or random.
Calibration:
Note that "positive" direction can be either clockwise or counter-clockwise depending on motor. Zero degrees is where the hi-to-lo index transition occurs while stepping in the "positive" direction.
If tinkercad needs assistance creating this model, please let me know via this thread.