dist_sensor.ino

#define trigPin 12
#define echoPin 11

int sensorTempPin = 0;
float distance = 1.0;

void lightDiode(int pin, float distance) {
  float standarized = 20.0 / pin;
  if(standarized < distance) {
    digitalWrite(pin, LOW);
  } else {
    digitalWrite(pin, HIGH);
  }
}

void lightDiodes(float distance) {
  for(int pin = 7; pin > 1; pin--) {
    lightDiode(map(pin, 2, 7, 1, 6), distance);
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(echoPin, INPUT);
  pinMode(trigPin, OUTPUT);
  for(int pin = 7; pin > 1; pin--) {
    pinMode(pin, OUTPUT);
  }
}

void loop() {
  distance = measureDistance();
  Serial.println(measureDistance());
  lightDiodes(distance);
  delay(100);
}

float measureDistance() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  return pulseIn(echoPin, HIGH) / 58.0;
}

float readTemp() {
  sensorTempPin = analogRead(A0);
  return (500.0 * sensorTempPin) / 1023;
}