Hello, I need a little help please. I am new to this and have tried to research as much info as i could find but have not seen anything to help me with my issue. Sooo…what’s making me crazy…LOL…
I have a DRV 8824 stepper motor driver
I have a Stepper Motor: Bipolar, 200 Steps/Rev, 35×28mm, 10V, 0.5 A/Phase
I am applying 12v to the driver and have adjusted the current limiter to 325ma
I am driving the step with PWM @ 50% duty cycle from a 18f2431 PIC micro
I have connected it up as per Pololu instructions and made the suggested current adjustments. The issue, is when I apply power and step, it turns slowly, not consistent and is jerky. I have tried different ranges of current but still no joy. I applied 12khz to the step and it wouldn’t work so I changed to 15khz and it acted the same way. I used 12KHz which is ~ 1 rps.
For the life of me I cannot figure this out. I haven’t tried different duty cycles yet but that should not matter as current will still be constant.
Any help I will welcome. Thanks!