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BOOSTXL-DRV8305EVM: When should I be running Lab 5b) ?

Part Number: BOOSTXL-DRV8305EVM

Hi,

I am just getting started with lab5b) after ID ing my motor and after experimenting with Kp values and understanding a limit to my Kp based on the high freq noise, in lab 5a). 

As a motor control beginner, I would like to know if there is a point evaluating gains with no load. These are bound to change when I connect my loads I am assuming.Is that right?

For my application, I will be taking feedback from a quadrature encoder for the position. Would I need to do lab 5b) even then?

As a follow up question, would the program qep.c and qep.h calculate the speed from the position? Or is that included in the actual code of lab 12a)

Thanks,

Sowmya