Analogue Read

const int analogPin = A0;

void setup(){
  Serial.begin(115200);
}

void loop(){
  int analogValue = analogRead(analogPin);
  Serial.println(analogValue);
}

// ANALOG IN(A0) -> POWER(5V) : 1023
// ANALOG IN(A0) -> POWER(3.3V) : 670 (1024/5V) * 3.3V = 675.8V
// ANALOG IN(A0) -> POWER(GND) : 0

const int analogPin = A0;

void setup(){
  Serial.begin(115200);
}

void loop(){
  int analogValue = analogRead(analogPin);
  Serial.println(analogValue);
}

// ANALOG IN(A0) -> POWER(5V) : 1023
// ANALOG IN(A0) -> POWER(3.3V) : 670 (1024/5V) * 3.3V = 675.8V
// ANALOG IN(A0) -> POWER(GND) : 0

// Potentiometer 0 ~ 1023 Lotate and check

const int ledPin = 10;
const int analogPin = A0;

void setup(){

}

void loop(){
  int sensorInput = analogRead(analogPin);
  analogWrite(ledPin, sensorInput/4);
}

// Depends on Potentiometer input adjust LED bright.

const int led[6] = {3, 4, 6, 9, 10, 11};
const int analogPin = A0;

void setup(){
  int i;
  for (i = 0; i <= 5; i++)
  {
    pinMode(led[i], OUTPUT);
  }
}

void loop(){
  int sensorInput = analogRead(analogPin);


  for (int n = 0; n<=5; n++){
    if(sensorInput > 1024/7*(1+n))
    digitalWrite(led[n], HIGH);
  else digitalWrite(led[n], LOW);
  }
}

/// Digital Bar mesurement

const int trig_pin = 11;
const int echo_pin = 12;

void setup(){
  pinMode(trig_pin, OUTPUT);
  pinMode(echo_pin, INPUT);

  Serial.begin(115200);
}

void loop(){
  digitalWrite(trig_pin, LOW);
  delayMicroseconds(2);
  digitalWrite(trig_pin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig_pin, LOW);

  long duration = pulseIn(echo_pin, HIGH);
  long distance = (duration/2) / 29.1;

  Serial.print(distance);
  Serial.println(" cm");
}

// pulseln