Recently I designed a circuit board with a drv8818 chip. I am attaching a document discussing the details of the layout and configuration. I am trying to manually toggle the step bit to move the motor. When toggling the bit the motor does not rotate. My next step is to replace the chip because I possibly have a bad chip. However I was curious if anyone had any ideas on some thing that is configured incorrectly or methods for determining if the chip has gone bad.
Thanks,
Brian