Regarding the stepper motor DRV8825, we would to know the speed and holding torque of the motor.
Datasheet not clearly stated upon checking. Can you help us clarify? Thank you very much.
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Speed is proportional to the STEP input and holding torque is proportional to the full scale current rating of the driver (2.5A in this case).
The motor specifications ultimately determine the capabilities of the motor, not driver specs.