Crashing on NodeMCU

[patrickjane]

I am not entirely sure where the error lies here, but I am trying to use a NodeMCU v1 together with a ESP-12E Motor Shield and a 28BYJ stepper motor. According to this link, the pins shall be 5, 0, 4, 2 or D1, D3, D2, D4.

However, when I try to spin the motor, I get a crash loop while I can hear the motor, but the shaft is not spinning. This is how the crash looks:

17:48:39.891 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
17:48:39.891 -> 
17:48:39.891 -> Soft WDT reset
17:48:39.891 -> 
17:48:39.891 -> >>>stack>>>
17:48:39.891 -> 
17:48:39.891 -> ctx: cont
17:48:39.891 -> sp: 3ffffd60 end: 3fffffc0 offset: 01a0
17:48:39.891 -> 3fffff00:  4020297d feefeffe feefeffe feefeffe  
17:48:39.891 -> 3fffff10:  40100250 00000010 3ffee2e8 40100279  
17:48:39.926 -> 3fffff20:  3ffe8622 3ffee2e8 00000010 4020120c  
17:48:39.926 -> 3fffff30:  00000001 00000001 00000000 00000000  
17:48:39.926 -> 3fffff40:  40201344 3ffee2e8 3ffee2e8 4020123a  
17:48:39.926 -> 3fffff50:  40201344 3ffee330 00000739 4020129d  
17:48:39.926 -> 3fffff60:  3ffee310 0000000c 3ffee330 402012cc  
17:48:39.960 -> 3fffff70:  3ffee310 3ffee330 3ffee330 00000800  
17:48:39.960 -> 3fffff80:  3ffee310 3ffee330 3ffee2e8 40201080  
17:48:39.960 -> 3fffff90:  feefeffe feefeffe feefeffe 3ffee398  
17:48:39.960 -> 3fffffa0:  3fffdad0 00000000 3ffee358 40201b80  
17:48:39.960 -> 3fffffb0:  feefeffe feefeffe 3ffe84e0 40100be9  
17:48:39.997 -> <<<stack<<<

This is the code:

#include <CheapStepper.h>

bool stepped = false;
const int stepsPerRevolution = 2048;

CheapStepper motor(D1, D3, D2, D4);

void setup() {
  Serial.begin(74880);
  motor.setTotalSteps(stepsPerRevolution);
  motor.setRpm(17);
  
  Serial.println("UP");

  if (!stepped)
  {
    Serial.println("stepping ...");
    motor.move(true, stepsPerRevolution);
    stepped = true;
  }  
}

Can someone help me out? Is the NodeMCU or the shield maybe not compatible with this library?

I do know that the motor works with that board, because I was using the LUA firmware before, but now want to use C++/Arduino IDE.

[IZ-Labs]

Hi there, I know this is late to the party, but in case anyone is going through this I wanted to post my experience.

I have been successfully using the CheapStepper library with a nodeMCU board for a while now. Every so often I do get this soft reset issue, but for my use case it hasn't been an issue. If you're having issues getting the shaft to turn (I certainly did), I recommend you try using the moveDegrees() method rather than the move by steps version you've tried here. it's been more reliable for me. I've included a section of my working code below.

// Initalize Stepper object
CheapStepper stepper(D0,D1,D2,D3);
boolean clockwise = true;
boolean counterclockwise = false;

if (motorone_status == "ON")  {
    stepper.moveDegrees(clockwise, 180);
    Serial.println("one turn of motor ");
    server.send(200, "text/plain", "One spin sent!");
    delay(2000);
    motorone_status == "OFF";
    stepper.off();
}

[Marcus13685]

Hi there, I know this is late to the party, but in case anyone is going through this I wanted to post my experience.

I have been successfully using the CheapStepper library with a nodeMCU board for a while now. Every so often I do get this soft reset issue, but for my use case it hasn't been an issue. If you're having issues getting the shaft to turn (I certainly did), I recommend you try using the moveDegrees() method rather than the move by steps version you've tried here. it's been more reliable for me. I've included a section of my working code below.

// Initalize Stepper object
CheapStepper stepper(D0,D1,D2,D3);
boolean clockwise = true;
boolean counterclockwise = false;

if (motorone_status == "ON")  {
    stepper.moveDegrees(clockwise, 180);
    Serial.println("one turn of motor ");
    server.send(200, "text/plain", "One spin sent!");
    delay(2000);
    motorone_status == "OFF";
    stepper.off();
}

Thank you good sir!

[donbrew1]

That solves the "soft WDT reset". Now the ESP just crashes.