Question
L9942 not working properly accoding to the sample
Hello
I'm a newer about stepping motor IC L9942
I compsed of L9942 Climate control Unit in HVAC .
Some devices have no problem when they are controlled by a program.
A specific device rotates discontinuously when it rotates.
I am looking for the cause of whether this is a program error or a circuit problem.
I wonder if the EVA board is made up of 6.8Kohm resistor (R8) for Rref, and what is the effect of lowering the resistance value?