stepper motor issue - please help!!!

Projects Programming
1

i'm having some problems with a stepper motor in my project.
the project should read my keypad and turn the amount of degrees typed both ways.
the problem is that it's only turning one way
please help me

this is my sketch

#include <Stepper.h>

#include <LiquidCrystal.h>

#include <Keypad.h>
const int stepsPerRevolution = 360;
const byte ROWS = 4; //four rows
const byte COLS = 3; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};
byte rowPins[ROWS] = {32, 33, 34, 35}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {36, 37, 38}; //connect to the column pinouts of the keypad
LiquidCrystal lcd(27, 26, 25, 24, 23, 22);
Stepper stepper(stepsPerRevolution, 28, 29, 30, 31);
int C = 0;
int B = 0;
int A = 0;
int D = 0;
//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup(){
  Serial.begin(9600);
  lcd.begin(16, 2);
  lcd.print("THE KNEE HEALER");
  stepper.setSpeed(20);
}
  
void loop(){
  char dezena = customKeypad.waitForKey();
  lcd.setCursor(0,1);
  A = dezena * 10;
  B = A - 480;
  lcd.print(dezena);
  char unidade = customKeypad.waitForKey();
  lcd.print(unidade);
  C = unidade - 48;
  D = B + C;
  Serial.println(D);
  callMotor();
}
void callMotor(){
   G = D * 6;
   const int F= G;
   const int E=-G;
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("angulo:");
   lcd.print(D);
   lcd.setCursor(0,1);
   stepper.step(F);
   stepper.step(E);

}

sketch_aug16D_funcional3.ino (1.36 KB)

2

the problem is that it's only turning one way

Is it a hardware or a software problem. Create a simple sketch to step in one direction. Run it. Note what happens. Alter the sketch to step in the other direction. Run it. Note what happens.

3

I very much like @PaulS's suggestion. That's exactly how I deal with my problems.

Also ... edit your post to put your code in code tags using the # button so it looks like this. It makes it so much easier to read.

And ... use meaningful names for variables instead of keeping their purpose secret with names like A and B

Links to the datasheets for the stepper motor and the stepper motor driver you are using would also help people to help you.

...R