Grove Motor Driver (TB6612FNG) control stepper motor

Products & Technology
1

Hi all,

I tried to control my stepper motor to rotate at a small angle ( ex: 45 degrees) and using the Grove Motor Driver (TB6612FNG). And it did not rotate correctly ( 2-3 degree difference). But when I make it rotate 1-2 round it will be exactly correct. I’m not putting any load on the motor. What would be the problems?

Thanks for the support.

2

Hmm could be the same as by problem in porting the library. There is a magic number in the cpp file. I found I needed to change it from 3000.0 to 7000.0 to get my motor working correctly. But I have no idea what this magic number represents.