Other Parts Discussed in Thread: DRV8847
Hi,
We are using stepper motor driver DRV8825 in our project. Schematic for the same is given below.
Stepper motor type we are using in our project is 4 lead bipolar type, operated in 1/2 stepping mode. We are facing an issue with one of our prototypes in which stepper motor direction of rotation is not getting controlled, but the number of the revolutions stepper motor rotates is as expected. Every time I switch ON or OFF power to the stepper motor, the direction of rotation of stepper motor is changing in a random fashion.
We have probed DIR, STEP, FAULT, V3P3OUT pin of driver IC but no issues were observed. Please let us know what is causing the stepper motor to behave erratically.
Thanks,
Indhu N