KY-028 Thermistor Digital Temperature Sensor Module

Digital temperature sensor module KY-028
The digital temperature module and the digital 13 interface have their own LED to build a simple circuit and make a temperature warning lamp.

The digital temperature sensor is connected to the digital 3 interface by using the LED of the digital 13 interface. When the digital temperature sensor senses a key signal, the LED turns on, otherwise it turns off.

Routine source code:

int Led=13; //Define the LED interface
int buttonpin=3; //Define the digital temperature sensor interface
int val; //Define the numeric variable val
void setup()

{pinMode(Led,OUTPUT); //Define LED as output interface.
pinMode(buttonpin,INPUT); //Define the digital temperature sensor as the output interface.}

void loop()
{val=digitalRead(buttonpin); //Assign the value reading of digital interface 3 to val.

If(val==HIGH)// When the digital temperature sensor detects a signal, the LED flashes.
{digitalWrite(Led,HIGH);}

else
{digitalWrite(Led,LOW);