i am design cnc driver by L297 and i connect osc by ceramic capacitor 104=100000*10e-12 and resistor 500 ohm
to get frequancy 29khz i want to ask if it good with mach 3 if i set it by 20 khz
or i must set it at high than that
my second quest is which better chopper ic WITH L297
IS L6203 OR L298??
AS MY stepper is 4.1A PER PHASE.