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Arduino•3mo ago

Stepper Motor Randomly Changing Directions

I am using an ESP32, ULN2003, and a 28BYJ-48 Stepper Motor. I have it set up so if the left button is pressed then it will go reverse, if the right one pressed it will go forward (also if any of the two previous cases, the blue led turns on) and if neither are/aren't pressed it stays still. For some reason it just changes directions whenever it likes. This is my code:

#include <Stepper.h>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  pinMode(33,OUTPUT);
  pinMode(32,OUTPUT);
  pinMode(35,INPUT_PULLUP);
  pinMode(34,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(35);
  int rightState = digitalRead(34);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  pinMode(33,OUTPUT);
  pinMode(32,OUTPUT);
  pinMode(35,INPUT_PULLUP);
  pinMode(34,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(35);
  int rightState = digitalRead(34);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

Thank you very much for your help.

160 Replies

AnonEngineering•3mo ago

Pins 34 & 35 are input only, they don't support INPUT_PULLUP

SultanOP•3mo ago

Hi Anon, I just rewrote it with the INPUT instead of INPUT_PULLUP, it kind of fixed it, what I mean by that around 70% of the time when you click the button it goes in the right direction and the other 30% it goes in the wrong direction.

#include <Stepper.h>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  pinMode(33,OUTPUT);
  pinMode(32,OUTPUT);
  pinMode(35,INPUT);
  pinMode(34,INPUT);
  pinMode(2, OUTPUT);
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(35);
  int rightState = digitalRead(34);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  pinMode(33,OUTPUT);
  pinMode(32,OUTPUT);
  pinMode(35,INPUT);
  pinMode(34,INPUT);
  pinMode(2, OUTPUT);
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(35);
  int rightState = digitalRead(34);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

AnonEngineering•3mo ago

if you use just INPUT you need to wire it with an external resistor the pin must be held HIGH or LOW, if you don't use a resistor the pin will float can you use other pins? 34 - 39 are the special "input only" pins

SultanOP•3mo ago

Could I use Pin 25 and 26?

AnonEngineering•3mo ago

yes, they support INPUT_PULLUP when you use the pullup a resistor inside the chip is added for you

SultanOP•3mo ago

Will the PULLUP make the input be default high? When I ran it with the PULLUP no signal was ever sent to the ULN2003 Board

AnonEngineering•3mo ago

yes, the pin idles HIGH until you push the button, then the pin goes LOW

SultanOP•3mo ago

Using the PULLUP didn't work, the board didn't receive any signals (indicated by the RED LEDS), I tried PULLDOWN but it would only go in one direction on both buttons

AnonEngineering•3mo ago

did you set the pinMode back to INPUT_PULLUP?

SultanOP•3mo ago

#include <Stepper.h>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  pinMode(33,OUTPUT);
  pinMode(32,OUTPUT);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  pinMode(33,OUTPUT);
  pinMode(32,OUTPUT);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

I did, did I mess up anything else when doing that?

AnonEngineering•3mo ago

looks OK, put print statements in your ifs to see if they are executing and add Serial.begin(9600); in setup you have the other side of the buttons to ground right?

SultanOP•3mo ago

I don't actually, nothing is connected to ground for the buttons

AnonEngineering•3mo ago

pin > one side of button, other side of button > ground the pullup holds the pin HIGH (1), when you press the pin connects to ground (0)

SultanOP•3mo ago

I don't have it setup like that currently, it is outputting high on 33 and 32 which are connected to my button respectively, and then connected 26 and 25 with INPUT_PULLUP to the other side of the button, so when I press it 'bridges' the connection. I will try to do it like you mentioned

AnonEngineering•3mo ago

no, just one pin per button

SultanOP•3mo ago

It works now! Thank you!

AnonEngineering•3mo ago

pin 25 . one side of button, other side of button to ground

SultanOP•3mo ago

Regarding this, does this mean pins 33 and 32 are reduandant?

AnonEngineering•3mo ago

yes, you only use one pin per button in this case 25 & 26 one for each

SultanOP•3mo ago

That is so much more simpler than what I was doing, thank you! One more thing, Would there be any way to stop the motor from getting hot? I assume its because of the voltage still going through it

AnonEngineering•3mo ago

because of current flowing through it yes are you using a 5v power supply for it?

SultanOP•3mo ago

Yes I am using a DC Power Supply

AnonEngineering•3mo ago

at 5v, iirc that is what 28BYJ-48 is rated for

SultanOP•3mo ago

I have it set to 5 volt and it is currently drawing 0.235 amps

AnonEngineering•3mo ago

so a bit over 1 watt is being dissipated by the motor

SultanOP•3mo ago

Would I be able to integrate a MOSFET in this system to control the voltage or ground that is connected to the ULN2003 board?

AnonEngineering•3mo ago

you could use a MOSFET as a power switch, another pin could drive the MOSFET to act as "motor on / off" does it get really hot? it shouldn't

SultanOP•3mo ago

Not really hot, just warm I was planning on using this control my blinds

AnonEngineering•3mo ago

warm is normal

SultanOP•3mo ago

Oh okay!

AnonEngineering•3mo ago

you can also use a drv8825 driver with a bigger stepper if you need to

SultanOP•3mo ago

#include <Stepper.h>
#include <iostream>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    printf("Nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    printf("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    printf("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    printf("Absolutely nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>
#include <iostream>

const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    printf("Nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    printf("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    printf("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    printf("Absolutely nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

This driver looks similar to the hw-134a drivers that I have

AnonEngineering•3mo ago

arduino doesn't support printf, use Serial.print those drivers have a STEP and a DIR pin, A4988, DRV, HW, all work about the same, just the specs are slightly different

SultanOP•3mo ago

Could I store this program on the ESP32? So I have it start this program anytime it boots up (not connected to computer)

AnonEngineering•3mo ago

once you upload it it stays on the esp until you load new code, even if power is removed

SultanOP•3mo ago

Oh, its that simple? Thank you!

AnonEngineering•3mo ago

thank Arduino / Espressiff 🙂

SultanOP•3mo ago

Thank you Arduino and Espressiff 🙂

AnonEngineering•3mo ago

lol

SultanOP•3mo ago

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    Serial.println("Nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    Serial.println("Absolutely nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    Serial.println("Nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    Serial.println("Absolutely nothing is supposed to happen");
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

This is the code know, for some reason deleting the two lines that made pin 33 and 32 outputs broke it, so it is doing that 70% 30% thing again Or it will go in the right direction in the begining then shake and go the wrong direction

AnonEngineering•3mo ago

shouldn't make any difference if it's all wired right these lines weren't doing anything

c++
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);

c++
  digitalWrite(33,HIGH);
  digitalWrite(32,HIGH);

brb

SultanOP•3mo ago

putting in a new stepper motor didn't fix the issue still got that 70% 30% I deleted the Serial.Println for 1&1 and 0&0 and now it doesn't even spin the motor

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(20);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(20);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

I can feel the motor trying to rotate but it doesn't

AnonEngineering•3mo ago

oh, you had 32 & 33 as OUTPUTs in your original, where are they going?

SultanOP•3mo ago

instead of having the pins go to ground I used 32 and 33 as High signals and when a high signal was detected on 35 or 34 it would act accordingly

AnonEngineering•3mo ago

oh, then it should make no difference

SultanOP•3mo ago

That is also what I think but know it won't even rotate.. , all I did was delete the Serial.print for the 0 & 0 and 1 & 1 cases

AnonEngineering•3mo ago

serial has no bearing either i'll simulate, give me a few minutes

SultanOP•3mo ago

I think when I used control f it messed up the speed, I made it 10 now it works

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(2,LOW);
    stepper.step(0);
  }

}

AnonEngineering•3mo ago

looks like it should work... https://wokwi.com/projects/435146748848937985 wokwi doesn't have your exact hardware, but the logic is sound...

SultanOP•3mo ago

What would you recommend doing?

AnonEngineering•3mo ago

i thought you said it's working for you

SultanOP•3mo ago

It is doing the 70% working and the 30% not working the 30% is specifcally going in the wrong direction

AnonEngineering•3mo ago

different than the sim i linked?

SultanOP•3mo ago

yes

AnonEngineering•3mo ago

then i'd suspect wiring, that's your code (and BTW, wokwi doesn't simulate current, you can't wire like i did in real life) but it simulates the logic perfectly what's pin 2 - the onboard LED?

SultanOP•3mo ago

Pin 2 is the onboard blue led

AnonEngineering•3mo ago

ok, not simulated

SultanOP•3mo ago

I was using it as a trouble shooting step, I can get rid of it

AnonEngineering•3mo ago

shouldn't be causing trouble...

SultanOP•3mo ago

I agree, but maybe for some incomprehensible reason still doing it with this barebones code:

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  //pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    //Serial.println("Turn Left");
    //digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    //Serial.println("Turn Right");
    //digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

}#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  //pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    //Serial.println("Turn Left");
    //digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    //Serial.println("Turn Right");
    //digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  //pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    //Serial.println("Turn Left");
    //digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    //Serial.println("Turn Right");
    //digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

}#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 13 ,12 ,14 ,27);

void setup() {
  Serial.begin(9600);
  pinMode(26,INPUT_PULLUP);
  pinMode(25,INPUT_PULLUP);
  //pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(26);
  int rightState = digitalRead(25);

  if(leftState == 0 && rightState == 0){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    //Serial.println("Turn Left");
    //digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    //Serial.println("Turn Right");
    //digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

}

What's funny is I have been trying to do this project for about a year, and the same thing kept happening I didn't know where to go to find some help until I came across this discord like 3 hours ago Maybe its cursed?

AnonEngineering•3mo ago

not sure what the problem is, doubt it's a curse, 95% of the time it's wiring or lack of sufficient current from your power supply 😉

SultanOP•3mo ago

I am using this to supply the motor:

SultanOP•3mo ago

https://www.amazon.com/dp/B09YSJQWRG?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2&th=1

Jesverty DC Power Supply Variable, 0-30V 0-10A Adjustable Switching...

Jesverty's SPS series is a high-efficiency, compact, lightweight, high-performance Switching mode DC regulated power supply. It can be used as a constant-voltage(C.V.) power supply and constant-current(C.C.) power supply. Also, convenient functions like a USB type-A charging port, and a high-prec...

AnonEngineering•3mo ago

that should be more than enough 🙂 is the power supply ground connected to the esp ground?

SultanOP•3mo ago

Yes I have common ground point Should I take a photo of the wiring I have going?

AnonEngineering•3mo ago

see the faint grey lines inside the button here?

No description

AnonEngineering•3mo ago

that represents how the button is wired, a press connects left to right

SultanOP•3mo ago

yes I think I have that wired up correctly because it doesn't start the motor until I press the button

AnonEngineering•3mo ago

maybe the ULN2003 isn't happy with 3.3v logic, usually see them on Unos (which use 5v logic)

SultanOP•3mo ago

I can plug in an arduino uno one sec

AnonEngineering•3mo ago

yeah, just need to change the pin numbers

SultanOP•3mo ago

Also, I just want to say thank you for sticking around, I just want to learn this stuff better and it mean's a lot.

AnonEngineering•3mo ago

you're welcome

SultanOP•3mo ago

No description

No description

SultanOP•3mo ago

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(2,INPUT_PULLUP);
  pinMode(3,INPUT_PULLUP);
  //pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(2);
  int rightState = digitalRead(3);

  if(leftState == 0 && rightState == 0){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    //Serial.println("Turn Left");
    //digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    //Serial.println("Turn Right");
    //digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(2,INPUT_PULLUP);
  pinMode(3,INPUT_PULLUP);
  //pinMode(2, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(2);
  int rightState = digitalRead(3);

  if(leftState == 0 && rightState == 0){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    //Serial.println("Turn Left");
    //digitalWrite(2,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    //Serial.println("Turn Right");
    //digitalWrite(2,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    //digitalWrite(2,LOW);
    stepper.step(0);
  }

}

SultanOP•3mo ago

No description

SultanOP•3mo ago

It has the same issue, it does the 70% working 30% not

AnonEngineering•3mo ago

that's good news, bad news good news is the levels don't seem to be the issue bad news is it still doesn't work... here's mine btw https://wokwi.com/projects/435148961261584385 just as a style thing, name the pins up top so if you need to change them you only have one line to change i don't see anything obvious wrong with the wiring...

SultanOP•3mo ago

#include <Stepper.h>


const int STEPS = 2048;

const int Left_Butt = 3;
const int Right_Butt = 2;
const int Led_Pin = 13;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(Left_Butt,INPUT_PULLUP);
  pinMode(Right_Butt,INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(Left_Butt);
  int rightState = digitalRead(Right_Butt);

  if(leftState == 0 && rightState == 0){
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;

const int Left_Butt = 3;
const int Right_Butt = 2;
const int Led_Pin = 13;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(Left_Butt,INPUT_PULLUP);
  pinMode(Right_Butt,INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(Left_Butt);
  int rightState = digitalRead(Right_Butt);

  if(leftState == 0 && rightState == 0){
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

}

😁, did it right the first time (LETS GO)

AnonEngineering•3mo ago

yes, now if you want an LED on pin 9, only one place to change

SultanOP•3mo ago

I should have done it this way the first time

AnonEngineering•3mo ago

live an learn 🙂 plus, it's pretty obvious what Led_Pin is, 6 months from now yer like "What is pin 9???" or worse, what does 9 mean here?

SultanOP•3mo ago

not even 6 months, tmmr lol

AnonEngineering•3mo ago

not related, but here is a different way to deal with buttons https://wokwi.com/projects/430668928277663745 it only looks for change, not is it pressed or not

SultanOP•3mo ago

I am going to save this for a controller I want to build, thank you!

AnonEngineering•3mo ago

but in your code, it isn't printing the button pressed correctly? in your code it should print continuously while pressed does it work differently if the stepper is unplugged? (not ULN, just stepper)

SultanOP•3mo ago

#include <Stepper.h>


const int STEPS = 2048;

const int Left_Butt = 3;
const int Right_Butt = 2;
const int Led_Pin = 13;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(Left_Butt,INPUT_PULLUP);
  pinMode(Right_Butt,INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(Left_Butt);
  int rightState = digitalRead(Right_Butt);

  if(leftState == 0 && rightState == 0){
    Serial.println("Neither Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    Serial.println("Both Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

}

#include <Stepper.h>


const int STEPS = 2048;

const int Left_Butt = 3;
const int Right_Butt = 2;
const int Led_Pin = 13;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(Left_Butt,INPUT_PULLUP);
  pinMode(Right_Butt,INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(Left_Butt);
  int rightState = digitalRead(Right_Butt);

  if(leftState == 0 && rightState == 0){
    Serial.println("Neither Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    Serial.println("Both Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

}

the lines are correctly printing

AnonEngineering•3mo ago

is this order correct?

c++
Stepper(STEPS, 4 ,5 ,6 ,7)

c++
Stepper(STEPS, 4 ,5 ,6 ,7)

SultanOP•3mo ago

IN1 is connected to 4 IN2 is connected to 5 IN3 is connected to 6 IN4 is connected to 7 yes

AnonEngineering•3mo ago

so all is well, except the stepper moves erratically?

SultanOP•3mo ago

and sometimes incorrectly

AnonEngineering•3mo ago

the LEDs on the drivers are also erratic?

SultanOP•3mo ago

no but I did notice that the 'C' light doesn't ever turn on It hasn't turned at all this ULN2003 is brand new

AnonEngineering•3mo ago

try replacing that wire duponts fail more often than you'd imagine and if all 4 don't light the stepper won't move correctly

SultanOP•3mo ago

I turned everything off, I started smelling burning

AnonEngineering•3mo ago

never a good sign

SultanOP•3mo ago

I have absolutely no idea what is burning

AnonEngineering•3mo ago

motor hot or the ULN chip?

SultanOP•3mo ago

nothing is hot the motor is almost cool just a little warm but its cooler than usual

AnonEngineering•3mo ago

smth should be warm if you smell burning motor power is direct from supply, not Uno right?

SultanOP•3mo ago

correct

AnonEngineering•3mo ago

did current spike?

SultanOP•3mo ago

no normal current I went and got a fire extingusher just in case I turned everything back on I don't smell burning I have no idea

AnonEngineering•3mo ago

try the example here https://lastminuteengineers.com/28byj48-stepper-motor-arduino-tutorial/

SultanOP•3mo ago

The LED is still not on, for the ULN2003

AnonEngineering•3mo ago

yeah, that is definately a problem

SultanOP•3mo ago

Let me get another one, one sec

AnonEngineering•3mo ago

proper operation depends on those four signals driving the coils

SultanOP•3mo ago

Okay I went and got a new one, immediately the 'C' light turns on

AnonEngineering•3mo ago

does it work any better? the stepper i mean

SultanOP•3mo ago

It only goes clockwise

AnonEngineering•3mo ago

try the example above you can use your pins, just change the code

SultanOP•3mo ago

/*
#include <Stepper.h>


const int STEPS = 2048;

const int Left_Butt = 3;
const int Right_Butt = 2;
const int Led_Pin = 13;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(Left_Butt,INPUT_PULLUP);
  pinMode(Right_Butt,INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(Left_Butt);
  int rightState = digitalRead(Right_Butt);

  if(leftState == 0 && rightState == 0){
    Serial.println("Neither Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    Serial.println("Both Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

}

*/

//Includes the Arduino Stepper Library
#include <Stepper.h>

// Defines the number of steps per rotation
const int stepsPerRevolution = 2048;

// Creates an instance of stepper class
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
Stepper myStepper = Stepper(stepsPerRevolution, 4, 5, 6, 7);

void setup() {
  // Nothing to do (Stepper Library sets pins as outputs)
}

void loop() {
  // Rotate CW slowly at 5 RPM
  myStepper.setSpeed(5);
  myStepper.step(stepsPerRevolution);
  delay(1000);

  // Rotate CCW quickly at 10 RPM
  myStepper.setSpeed(10);
  myStepper.step(-stepsPerRevolution);
  delay(1000);
}

/*
#include <Stepper.h>


const int STEPS = 2048;

const int Left_Butt = 3;
const int Right_Butt = 2;
const int Led_Pin = 13;


Stepper stepper = Stepper(STEPS, 4 ,5 ,6 ,7);

void setup() {
  Serial.begin(9600);
  pinMode(Left_Butt,INPUT_PULLUP);
  pinMode(Right_Butt,INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  stepper.setSpeed(10);

}

void loop() {

  int leftState = digitalRead(Left_Butt);
  int rightState = digitalRead(Right_Butt);

  if(leftState == 0 && rightState == 0){
    Serial.println("Neither Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

  else if(leftState == 1 && rightState == 0){
    Serial.println("Turn Left");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(-512);
  }

  else if(leftState == 0 && rightState == 1){
    Serial.println("Turn Right");
    digitalWrite(Led_Pin,HIGH);
    stepper.step(512);
  }

  else if(leftState == 1 && rightState == 1){
    Serial.println("Both Pressed");
    digitalWrite(Led_Pin,LOW);
    stepper.step(0);
  }

}

*/

//Includes the Arduino Stepper Library
#include <Stepper.h>

// Defines the number of steps per rotation
const int stepsPerRevolution = 2048;

// Creates an instance of stepper class
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
Stepper myStepper = Stepper(stepsPerRevolution, 4, 5, 6, 7);

void setup() {
  // Nothing to do (Stepper Library sets pins as outputs)
}

void loop() {
  // Rotate CW slowly at 5 RPM
  myStepper.setSpeed(5);
  myStepper.step(stepsPerRevolution);
  delay(1000);

  // Rotate CCW quickly at 10 RPM
  myStepper.setSpeed(10);
  myStepper.step(-stepsPerRevolution);
  delay(1000);
}

AnonEngineering•3mo ago

btw, this is formatted as a codeblock

c++
//Includes the Arduino Stepper Library
#include <Stepper.h>

// Defines the number of steps per rotation
const int stepsPerRevolution = 2048;

// Creates an instance of stepper class
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
Stepper myStepper = Stepper(stepsPerRevolution, 8, 10, 9, 11);

void setup() {
  // Nothing to do (Stepper Library sets pins as outputs)
}

void loop() {
  // Rotate CW slowly at 5 RPM
  myStepper.setSpeed(5);
  myStepper.step(stepsPerRevolution);
  delay(1000);

  // Rotate CCW quickly at 10 RPM
  myStepper.setSpeed(10);
  myStepper.step(-stepsPerRevolution);
  delay(1000);
}

c++
//Includes the Arduino Stepper Library
#include <Stepper.h>

// Defines the number of steps per rotation
const int stepsPerRevolution = 2048;

// Creates an instance of stepper class
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
Stepper myStepper = Stepper(stepsPerRevolution, 8, 10, 9, 11);

void setup() {
  // Nothing to do (Stepper Library sets pins as outputs)
}

void loop() {
  // Rotate CW slowly at 5 RPM
  myStepper.setSpeed(5);
  myStepper.step(stepsPerRevolution);
  delay(1000);

  // Rotate CCW quickly at 10 RPM
  myStepper.setSpeed(10);
  myStepper.step(-stepsPerRevolution);
  delay(1000);
}

SultanOP•3mo ago

yeah their code also doesn't work for me it keeps going clockwise

AnonEngineering•3mo ago

just the code above?

SultanOP•3mo ago

Yes

AnonEngineering•3mo ago

that is the standard "known good" code, points to an issue with the ULNs or steppers

SultanOP•3mo ago

I just in a new ULN2003 and Stepper, samething damn, so I have defective hardware 😭

AnonEngineering•3mo ago

hardware or wiring, the codes we've been playing with all checkout

SultanOP•3mo ago

touching the stepper motor, as the motor is starting it trys to turn anti clockwise but it changes direction to clockwise

AnonEngineering•3mo ago

https://wokwi.com/projects/435148961261584385

Sultan_Servo_Uno - Wokwi ESP32, STM32, Arduino Simulator

Run IoT and embedded projects in your browser: ESP32, STM32, Arduino, Pi Pico, and more. No installation required!

AnonEngineering•3mo ago

that's the example, just the pins changed

SultanOP•3mo ago

they have this code on the amazon page:

#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11
int Steps = 0;
boolean Direction = true;
void setup() {
Serial.begin(9600);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
}
void loop() {
for(int i=0; i<4096; i++){
stepper(1);
delayMicroseconds(800);
}
Direction = !Direction;
}

void stepper(int xw) {
for (int x = 0; x < xw; x++) {
switch (Steps) {
case 0:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
case 1:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, HIGH);
break;
case 2:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 3:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 4:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 5:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 6:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 7:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
default:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
}
SetDirection();
}
}
void SetDirection() {
if (Direction == 1) {
Steps++;
}
if (Direction == 0) {
Steps--;
}
if (Steps > 7) {
Steps = 0;
}
if (Steps < 0) {
Steps = 7;
}
}

#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11
int Steps = 0;
boolean Direction = true;
void setup() {
Serial.begin(9600);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
}
void loop() {
for(int i=0; i<4096; i++){
stepper(1);
delayMicroseconds(800);
}
Direction = !Direction;
}

void stepper(int xw) {
for (int x = 0; x < xw; x++) {
switch (Steps) {
case 0:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
case 1:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, HIGH);
break;
case 2:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 3:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 4:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 5:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 6:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 7:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
default:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
}
SetDirection();
}
}
void SetDirection() {
if (Direction == 1) {
Steps++;
}
if (Direction == 0) {
Steps--;
}
if (Steps > 7) {
Steps = 0;
}
if (Steps < 0) {
Steps = 7;
}
}

SultanOP•3mo ago

https://www.amazon.com/ELEGOO-28BYJ-48-ULN2003-Stepper-Arduino/dp/B01CP18J4A/ref=sr_1_4?crid=1VQ9BE7K9H8XA&dib=eyJ2IjoiMSJ9.fmFMtocSzQ7bstw5MJTZ584RIJP68c7y-KIb24OtxWoPi6ToxbFJ2Seltz-XAszBxZr9BbN-v-1ufaWhjuE1-guuSgSqN5tnGByqgkR_e2H7PvEoHXwWxIVguXqRmMB5pNDfKe5U3t7pMudE3U_KMubNpzfS3xOLiWvb03Xt9ORlbQcGM2feAZn9sJXYdlwod_jcoPcyloRRTK30zSWFCTMyT1AIlANOXE_42VOGypg.naTmgl_7YIlfUve6OW38ETMyeq0udCNahsJWWJTn40g&dib_tag=se&keywords=uln2003&qid=1751251738&sprefix=uln200%2Caps%2C170&sr=8-4#averageCustomerReviewsAnchor

ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Bo...

ELEGOO Inc. is a professional manufacturer and exporter that is concerned with the design, development production and marketing of arduino, 3d printers, raspberry pi and STM32. Our Dream is to make the best price and best quality produce for customers. So we would like to receive your valua...

SultanOP•3mo ago

wait, why does that code work???

AnonEngineering•3mo ago

Amazon code - i have a bridge in Brooklyn to sell ya 🙂

SultanOP•3mo ago

it turns anti clockwise and clockwise now? lol But that code actually works for some insane reason

AnonEngineering•3mo ago

but that works?!?!

SultanOP•3mo ago

It does!?!?!

SultanOP•3mo ago

https://tenor.com/view/yes-but-but-why-yeah-yup-gif-17916536

Tenor

SultanOP•3mo ago

It is also really efficent the motor is cool to the touch I don't understand it

AnonEngineering•3mo ago

beats me, that code doesn't work in the sim 🙂

SultanOP•3mo ago

https://tenor.com/view/crying-the-office-sad-steve-carrel-gif-6504535541019570333

Tenor

SultanOP•3mo ago

why does it WORKKKKKK??!?!?!?

AnonEngineering•3mo ago

just back to earlier, they used define to name the pins

c++
#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11

c++
#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11

SultanOP•3mo ago

is #define or const int better?

AnonEngineering•3mo ago

that starts an argument every time 🙂 I prefer the constant but...

SultanOP•3mo ago

okay then I will stick with the const int

AnonEngineering•3mo ago

so it would seem that driver wants a different pin order

SultanOP•3mo ago

🫠

AnonEngineering•3mo ago

so try that order with your code

SultanOP•3mo ago

Sorry, I am not understanding it Would you mind explaning what you mean?

AnonEngineering•3mo ago

brrb your code had

c++
Stepper stepper = Stepper(STEPS, 13, 12, 14, 27);

c++
Stepper stepper = Stepper(STEPS, 13, 12, 14, 27);

that is the order of IN1 - IN4, it looks like they want the reverse

SultanOP•3mo ago

//Includes the Arduino Stepper Library
#include <Stepper.h>

// Defines the number of steps per rotation
const int stepsPerRevolution = 2048;

// Creates an instance of stepper class
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
Stepper myStepper = Stepper(stepsPerRevolution, 11, 10, 9, 8);

void setup() {
  // Nothing to do (Stepper Library sets pins as outputs)
}

void loop() {
  // Rotate CW slowly at 5 RPM
  myStepper.setSpeed(5);
  myStepper.step(stepsPerRevolution);
  delay(1000);

  // Rotate CCW quickly at 10 RPM
  myStepper.setSpeed(10);
  myStepper.step(-stepsPerRevolution);
  delay(1000);
}

//Includes the Arduino Stepper Library
#include <Stepper.h>

// Defines the number of steps per rotation
const int stepsPerRevolution = 2048;

// Creates an instance of stepper class
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
Stepper myStepper = Stepper(stepsPerRevolution, 11, 10, 9, 8);

void setup() {
  // Nothing to do (Stepper Library sets pins as outputs)
}

void loop() {
  // Rotate CW slowly at 5 RPM
  myStepper.setSpeed(5);
  myStepper.step(stepsPerRevolution);
  delay(1000);

  // Rotate CCW quickly at 10 RPM
  myStepper.setSpeed(10);
  myStepper.step(-stepsPerRevolution);
  delay(1000);
}

AnonEngineering•3mo ago

what does that do?

SultanOP•3mo ago

I think it works correctly

AnonEngineering•3mo ago

i've never seen a driver that wants reverse - but the "right" order is imperative (also never seen code on Amazon that works 🙂 )

SultanOP•3mo ago

It works know! Thank you so very much, I never would have figured this out by myself, you truly are a great person, staying with me for 4 hours, thank you very much!

AnonEngineering•3mo ago

at least we got somewhere 😉 glad it works, now that you know the right setup for your hardware you can experiment with code

SultanOP•3mo ago

Yes, I want to hook it up to the internet and then have alexa control it, without using esphome on home assistant

AnonEngineering•3mo ago

so next step is get it working back on your esp

SultanOP•3mo ago

Definitely, but that is probably a tmmr problem, I have been trying to figure this out sense 10AM, its almost 8:30PM over here

AnonEngineering•3mo ago

not gonna tell the wife about this project - she'll want me to build it for her 🙂

SultanOP•3mo ago

lmao, my dad would make me do this for the whole house

AnonEngineering•3mo ago

yeah 11:30 here in the east, and work tomorrow

SultanOP•3mo ago

Wow man, up until 11:30 for a random stranger, I don't know what to say, thank you so much

AnonEngineering•3mo ago

oh it's better than binge watching TV, no worries

SultanOP•3mo ago

I was thinking of going to binge right now, after getting some food of course. Alright man, thank you very much again, and I hope you have a great rest of your night!

AnonEngineering•3mo ago

you too!

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