int sensorPin = 0;
int led1 = 13;
int led2 = 11;
int led3 = 12;
int sensorValue = 0;
//const int sensorPin = A0;
const float baselineTemp = 20.0;

void setup() {
  pinMode(led1, OUTPUT);
    pinMode(led2, OUTPUT);
      pinMode(led3, OUTPUT);
        Serial.begin(11500);
          for(int pinNumber = 2; pinNumber<5; pinNumber++){
           pinMode(pinNumber,OUTPUT);
            digitalWrite(pinNumber, LOW);
             }
             }

             void loop() {
               int sensorVal = analogRead(sensorPin);
                 //Serial.print(“Sensor Value: “); 
                    Serial.print(sensorVal);

                      digitalWrite(led1, HIGH);
                        delay(sensorValue);
                          digitalWrite(led1, LOW);
                            delay(sensorValue);

                              digitalWrite(led2, HIGH);
                                delay(sensorValue);
                                  digitalWrite(led2, LOW);
                                    delay(sensorValue);

                                      digitalWrite(led3, HIGH);
                                        delay(sensorValue);
                                          digitalWrite(led3, LOW);
                                            delay(sensorValue);

                                             // convert the ADC reading to voltage
                                              float voltage = (sensorVal/1024.0) * 5.0;
                                               //Serial.print(“, Volts: “);
                                                Serial.print(voltage);
                                                 //Serial.print(“, degrees C: “); 
                                                  // convert the voltage to temperature in degrees
                                                   float temperature = (voltage - .5) * 100;
                                                    Serial.println(temperature);
                                                     if(temperature < baselineTemp){
                                                      digitalWrite(2, LOW);
                                                       digitalWrite(3, LOW);
                                                        digitalWrite(4, LOW);

                                                         }else if(temperature >= baselineTemp+2 && 
                                                          temperature < baselineTemp+4){
                                                           digitalWrite(2, HIGH);
                                                            digitalWrite(3, LOW);
                                                             digitalWrite(4, LOW);

                                                              }else if(temperature >= baselineTemp+4 && 
                                                               temperature < baselineTemp+6){
                                                                digitalWrite(2, HIGH);
                                                                 digitalWrite(3, HIGH);
                                                                  digitalWrite(4, LOW);

                                                                   }else if(temperature >= baselineTemp+6){
                                                                    digitalWrite(2, HIGH);
                                                                     digitalWrite(3, HIGH);
                                                                      digitalWrite(4, HIGH);

                                                                       } delay(1000);
                                                                       }