//Show Hall Effect sensor's value with LEDs - based on Nadieh her code
#define pin_hall 4
#define pin_led 0

int sensor_value_magnet = 0;
int brightness = 0;

void setup() {
  Serial.begin(9600);
   Serial.swap(1);
  pinMode(pin_led, OUTPUT);
}//void setup

void loop() {
  //Get the value from the Hall effect sensor
  sensor_value_magnet = analogRead(pin_hall);
  Serial.println(sensor_value_magnet);

  if(sensor_value_magnet >= 512) {
    //Adjust the brightness of the led
    brightness = map(sensor_value_magnet, 512, 1023, 0, 255);
    
    //Turn off the led
    digitalWrite(pin_led, LOW);
  } else if (sensor_value_magnet <= 506) {
    //Adjust the brightness of the led
    brightness = map(sensor_value_magnet, 0, 506, 255, 0);
    analogWrite(pin_led, brightness);

  } else {
    //Turn off led if it's measuring the ±default value
    digitalWrite(pin_led, LOW);
  }//else
  
  delay(30);
}//void loop