# 8.4 Temperature and Humidity Sensor

## Hardware Wiring

![Digital Temperature](https://2341898987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LCFDbcteyTR3tQSs-5x%2F-LCFE4dCRQBMq1ajywfh%2F-LCFEAYb1QVxyRv5GTyo%2F025_digitaltemperature.jpg?generation=1526059548719428\&alt=media)

## Sketch

The code can be found at [Examples\_Arduino - sensor-kit-for-arduino - \_025\_DigitalTemperature - \_025\_DigitalTemperature.ino](https://github.com/LongerVisionRobot/Examples_Arduino/blob/master/sensor-kit-for-arduino/_025_DigitalTemperature/_025_DigitalTemperature.ino).

```
int Led=13;       // Define LDE Pin
int buttonpin=3;  // Define pin for digital tempature sensor
int val;          // Define Variable val
void setup()
{
  pinMode(Led,OUTPUT);  // Define pin for tap sensor
  pinMode(buttonpin,INPUT);// Define digital temperature sensor as input
  Serial.begin(9600);
}
void loop()
{
  val=digitalRead(buttonpin); // assign digital pin 3's reading to val
  Serial.println(val);
  if(val==HIGH) // anything detected by digital temperature sensor, LED starts
  {
    digitalWrite(Led,HIGH);
  }
  else
  {
    digitalWrite(Led,LOW);
  }
}
```


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