Arduino MEGA connection to DRV8825 and NEMA 17 stepper motor

Other Hardware Motors, Mechanics, Power and CNC
1

I'm currently expanding on a previous student's project using a 2560 board to control one stepper motor. I got everything connected but for some reason there is no current running through and so the motor is not moving at all. I am trying to move the motor over a specified duration of time with the maximum amount of microstepping (1/32). I'm very new to Arduino so if I'm missing anything please let me know! Any help is appreciated. I have attached my code and current schematic of my setup.

#include <AccelStepper.h>

#define M0 4
#define M1 5
#define M3 6

AccelStepper stepper1(1, 23, 22);

float maxspeed = 100;
int maxacceleration = 12000;
long direction = 1;
long maxsteps = 37000;

void setup() {

 pinMode(M0, OUTPUT);
 pinMode(M1, OUTPUT);
 pinMode(M3, OUTPUT);

 digitalWrite(M0, HIGH);
 digitalWrite(M1, HIGH);
 digitalWrite(M2, HIGH);

 stepper1.setMaxSpeed(maxspeed);
 stepper1.setAcceleration(maxacceleration);
 stepper1.moveTo(direction*maxsteps);

}

void loop() {

 stepper1.run();

}

Arduino_Attempt_Final?
Arduino_Attempt_Final?1920×1407 116 KB

2

NEMA 17 gives no useful information. It's a mechanical specification.
Running stepper current through a breadboard gives bad feelings. Those contact fingers are mostly designed for signals, not motor currents. You might have bad or burned breadboard contacts.
What's the electrical spec for the stepper and for the power supply?

3

Hi,

Wandering on stepper info on the web and finding this. I might be late but your schematic shows clearly that your enable pin is not connected, therefore your driver not enabled.
Plus the pins you declare in your sketch are not the ones used on your schematic.

This video gives nice basic code exemples

And this one explains wiring without CNC shield.

With both you should be eable to achieve your project.

4

Make sure that you don't limit voltage and current with that lab supply.
The driver should control motor current, not the supply.
Leo..