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Goal is to create an arduino program that turns on a stepper motor with a sound sensor and it rotate continuously until a magnet sensor

Goal is to create an arduino program that turns on a stepper motor with a sound sensor and it rotate continuously until a magnet sensor is activated and it shuts off. Then once the sound sensor is activated again it goes into the reverse direction until it approaches the other magnet.
The problem I am having is that my stepper motor is vibrating and not rotating. What have I done wrong? How can I fix it?
I believe the error might be in my moveFoward/backward functions.
My code:
#include
const int soundPin =2; // Analog pin for microphone sensor
const int magnetPin1=3; // Digital pin for initial position magnet
const int magnetPin2=4; // Digital pin for stopping position magnet
const int stepsPerRevolution =2048; // Steps per revolution for 28BYJ-48 stepper motor
Stepper myStepper(stepsPerRevolution,8,9,10,11); // Define stepper motor pins
int speed =8; // Stepper motor speed
unsigned long lastStepTime =0; // Time of last step
unsigned long debounceDelay =50; // Debounce delay in milliseconds
void setup(){
pinMode(soundPin, INPUT);
pinMode(magnetPin1, INPUT_PULLUP);
pinMode(magnetPin2, INPUT_PULLUP);
myStepper.setSpeed(speed);
Serial.begin(9600);
}
void loop(){
int soundVal = analogRead(soundPin); // Read microphone sensor value
Serial.println(soundVal);
// Check for sound and magnet sensor states
if (soundVal >500 && digitalRead(magnetPin2)== LOW){// Sound detected, and at stopping position
moveForward();
} else if (soundVal >500 && digitalRead(magnetPin1)== LOW){// Sound detected, and at initial position
moveBackward();
}
}
void moveForward(){
while (digitalRead(magnetPin2)== LOW){// Keep moving until stopping position is reached
if (millis()- lastStepTime >= debounceDelay){
myStepper.step(1);
lastStepTime = millis();
}
}
}
void moveBackward(){
while (digitalRead(magnetPin1)== LOW){// Keep moving until initial position is reached
if (millis()- lastStepTime >= debounceDelay){
myStepper.step(-1);
lastStepTime = millis();
}
}
}

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