TPIC6B595 Shift Registers Controlling Multiple Steppers

Projects General Guidance
30

About saving to eeprom.
I think you should include a setup button to your project,
so you can ignore the saved eeprom values during homing/resetting/zeroing of the motors.

Here are some (untested) ideas for "ignore/load" that you can add to setup().

And a function that you can use to write to eeprom.
Leo..

#include <EEPROM.h>
int eeAddress = 0; // address offset
const byte zeroPin = 6; // button between pin and ground

void setup() {
  pinMode(zeroPin, INPUT_PULLUP);
  if (digitalRead(zeroPin)) { // if not pressed
    for (int i = 0; i < motors; i++) {
      EEPROM.get(eeAddress, nowPos[i]);
      eeAddress += 2; // int is 2 bytes
    }
  }
}

void eeSave() {
  for (int i = 0; i < motors; i++) {
    EEPROM.put(eeAddress, nowPos[i]);
    eeAddress += 2;
  }
}