I am trying to control two stepper motors using arduino uno and 2 x-nucleo-ihm03a1, driver stacked on bottom motor working fine but top driver not responding
R3 and R6 closed, R4,R5,R7,R8 open for first board,
for second board R4 and R8 closed , R3,R5,R6,R7 open for second board( TOP BOARD)