const int buttonPin = 13;
const int ledPin = 12;
const int sensor = A0;
int current;
int threshold = 400;

void setup() {
 pinMode(ledPin, OUTPUT);
 pinMode(sensor, INPUT);
 Serial.begin(115200);
}

void loop() {
  current= analogRead(sensor);
  Serial.println(current);
  
  if(current >= threshold){
    digitalWrite(ledPin, HIGH);
  }
  else {
    digitalWrite(ledPin, LOW);
  }
}