I have a 5V (850mA) BLDC motor from a hard drive connected to the DRV11873EVM board. Using the speed-adjust potentiometer (R6), I can increase the speed of the motor and I can also change its rotation (forward or reverse) via the J1/FR pin.
However, I don't know why the motor jumps/starts the first time the board is powered up and why it never completely stops when the potentiometer is turned all the way clockwise (see link to this video below).
http://youtu.be/92eUFE_JIBc
Anyway comments or suggestions will be greatly appreciated.
TIA!