Stepper motor + Arduino Uno + CNC Shield + DRV8825 and it doesn't work

[darek2023]

Hello,

First of all - I've been working on this for 2 days, searching the web without success.
The goal is to run a stepper motor.

Here's what we have:

2 stepper motors, Arduino Uno, CNC shield, DRV8825 driver, 24V 4.5A power supply.

Motor 1: STP-43D034 Nema 17

Motor 2: 28HB30-401A Nema 11

I set up the DRV8825 driver for Nema 11 with a ratio of 0.3.

I connected the driver to the Y connector on the CNC shield.

Here's the test program.

#include <Stepper.h>

// Ustawienia silnika krokowego
#define STEPS_PER_REV 200 // Liczba kroków na obrót silnika
#define STEPPER_PIN_1 8   // Pin 8 dla kierunku silnika krokowego
#define STEPPER_PIN_2 9   // Pin 9 dla kierunku silnika krokowego
#define STEPPER_PIN_3 10  // Pin 10 dla kierunku silnika krokowego
#define STEPPER_PIN_4 11  // Pin 11 dla kierunku silnika krokowego

// Inicjalizacja obiektu Stepper
Stepper stepper(STEPS_PER_REV, STEPPER_PIN_1, STEPPER_PIN_3, STEPPER_PIN_2, STEPPER_PIN_4);

void setup() {
  // Ustawienie prędkości silnika
  stepper.setSpeed(100);
}

void loop() {
  // Przesunięcie silnika o 10 kroków w prawo
  stepper.step(10);
  delay(500);
  // Przesunięcie silnika o 10 kroków w lewo
// stepper.step(-100);
 // delay(500);
}

The problem is how to connect the motor cables to the shield to make the motor move?

I know how to pair the cables - AA BB - but I don't know which one is AA and which one is BB. The attempt to assign A- A+ B- B+ didn't work for me because the resistance fluctuates during the tests and I can't draw any meaningful conclusions.

Motor 1 has a small connector with strange colors and moving the cables in the connector configuration doesn't help.

Motor 2 has supposedly standard colors (cables not terminated with a plug), but I've tested many combinations and it didn't help.

I don't know how to find out how to properly connect the motor.

Thanks in advance

[groundFungus]

Stepper motor basics.

simple stepper code

Identify stepper motor leads.

The stepper driver enable pins are pulled high so the stepper drivers are disabled by default. Pull pin 8 (Uno pin) low or jumper the EN/GND header on the CNC shield.

Uno pins to CNC shield pins:

[darek2023]

Thanks,
I solved the problem . There was a problem in the code and in the "enable header" .
However, it turned out that it does not matter how I connect the cables from one pair - it is important that it be one pair. I changed cables in order and I don't see any difference(within one pair). Could it turn out to be significant under load?
The smaller motor (Nema 11) when connected correctly, hums gently all the time - when it is not moving. Is it normal? The larger Nema 17 is quiet.
I set 0.3 on the controller - the small one has 0.6A 6.7Ohm.