Arduino Analog Input Digital Output

gistfile1.txt

//this is basic code for variable/analog resistor 
int ledPin = 2;
int sensorPin = A0;
int sensorValue = 0;


void setup() {
  // put your setup code here, to run once:

  pinMode(ledPin, OUTPUT);
    
  Serial.begin(9600); //opens connection to the serial monitor

}

void loop() {
  // put your main code here, to run repeatedly:

  // in my dream code, this would read the pulse 
  sensorValue = analogRead(sensorPin);
  Serial.println(sensorValue);  //print line
  delay(10); // 10 millisecond delay

  // when the pulse rated above a certain frequency it would play the sound of a heartbeat
  if (sensorValue < 800) {
    digitalWrite(ledPin, HIGH);
  }

  else {
    digitalWrite(ledPin, LOW);
  }

}