We are using a stepper motor (Pollulu 1209) which has a rated voltage of 2.7V and resistance of 2.7 ohms. This means that the rated current is 1 A. We have also set the current limit of the DRV8825 motor driver to 1A. We are running the motor with a 24V power supply. On the multimeter, the current value doesn’t go beyond 250 mA. Clearly, something is not right since the motor should consume more current. Can someone help us solve this? Is there a particular way of measuring the current of the system?
In addition to using a multimeter, we added a 1-ohm resistor in series with the system and measured voltage across it using an oscilloscope. Even that is giving similar results that is low current. What could be the reason for this?
Why are we getting a low current reading?