Moving stepper moto with Photoresistor ad L298n

Projects Programming
1

I'm trying to use a photoresistor to control a stepper motor but I don't know if I coded it correctly.

#include <Stepper.h>

// Number of steps per output rotation
const int analogPin = A0;
int lightValue = analogRead(A0);
const int stepsPerRevolution = 200;

// Create Instance of Stepper library
Stepper myStepper(stepsPerRevolution, 5, 6, 7, 8);


void setup()
{
	// set the speed at 60 rpm:
	myStepper.setSpeed(60);
	// initialize the serial port:
	Serial.begin(9600);
  }

void loop() 
{
if (lightValue < 300) {
	Serial.println("clockwise");
	myStepper.step(stepsPerRevolution);
	delay(500);

} else if (lightValue>300) {
	// step one revolution in the other direction:
	Serial.println("counterclockwise");
	myStepper.step(-stepsPerRevolution);
	delay(500);
}
}```
2

You need read analog(A0) inside the loop to work.

#include <Stepper.h>

// Number of steps per output rotation
const int analogPin = A0;
int lightValue = analogRead(A0);
const int stepsPerRevolution = 200;

// Create Instance of Stepper library
Stepper myStepper(stepsPerRevolution, 5, 6, 7, 8);


void setup()
{
  // set the speed at 60 rpm:
  myStepper.setSpeed(60);
  // initialize the serial port:
  Serial.begin(9600);
}

void loop()
{
  lightValue = analogRead(A0);      //  <<<<<<-------------
  if (lightValue < 300) {
    Serial.println("clockwise");
    myStepper.step(stepsPerRevolution);
    delay(500);

  } else if (lightValue > 300) {
    // step one revolution in the other direction:
    Serial.println("counterclockwise");
    myStepper.step(-stepsPerRevolution);
    delay(500);
  }
}
3

Thanks you i will put that in when i have the chance.

4

After putting that line in it is only turning one direction.

5

Use this circuit and set the threshold to 512 (change 300 to 512)

image